Hướng dẫn python deque append multiple - python và nối nhiều

Deque (hàng đợi kết thúc gấp đôi) trong Python được triển khai bằng cách sử dụng các bộ sưu tập mô -đun. Deque được ưu tiên hơn một danh sách trong các trường hợp chúng tôi cần các hoạt động cộng đồng và pop nhanh hơn từ cả hai đầu của container, vì Deque cung cấp độ phức tạp thời gian O (1) ) Độ phức tạp về thời gian.collections“. Deque is preferred over a list in the cases where we need quicker append and pop operations from both the ends of the container, as deque provides an O(1) time complexity for append and pop operations as compared to a list that provides O(n) time complexity.

Các loại đầu vào deque bị hạn chế

• Đầu vào hạn chế deque: & nbsp; đầu vào bị giới hạn ở một đầu trong khi việc xóa được cho phép ở cả hai đầu.:  Input is limited at one end while deletion is permitted at both ends.
• Đầu ra hạn chế deque: đầu ra bị giới hạn ở một đầu nhưng chèn được cho phép ở cả hai đầu.: output is limited at one end but insertion is permitted at both ends.

Ví dụ: Mã Python để chứng minh Deque & NBSP;

Python3

from collections import deque 

queue

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

Output:  

deque(['name', 'age', 'DOB'])

Hoạt động trên deque & nbsp;

Ví dụ 1: nối các mục một cách hiệu quả

• append ():- Hàm này được sử dụng để chèn giá trị vào đối số của nó vào đầu bên phải của deque.:- This function is used to insert the value in its argument to the right end of the deque.
• Phụ lục ():- Hàm này được sử dụng để chèn giá trị vào đối số của nó vào đầu bên trái của deque.:- This function is used to insert the value in its argument to the left end of the deque.

Python3

import

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

Output:  

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

Ví dụ 2: Các mục Popping một cách hiệu quả

• pop ():- Hàm này được sử dụng để xóa một đối số từ đầu bên phải của deque.:- This function is used to delete an argument from the right end of the deque.
• Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.:- This function is used to delete an argument from the left end of the deque.

Python3

import

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

import2

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

import9

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

Output:  

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque: deque([1, 2, 3]) The deque after appending at right is : deque([1, 2, 3, 4]) The deque after appending at left is : deque([6, 1, 2, 3, 4])8The number 4 first occurs at a position : 4 The deque after inserting 3 at 5th position is : deque([1, 2, 3, 3, 3, 4, 2, 4]) The count of 3 in deque is : 3 The deque after deleting first occurrence of 3 is : deque([1, 2, 3, 3, 4, 2, 4])2The deque after extending deque at end is : deque([1, 2, 3, 4, 5, 6]) The deque after extending deque at beginning is : deque([9, 8, 7, 1, 2, 3, 4, 5, 6]) The deque after rotating deque is : deque([1, 2, 3, 4, 5, 6, 9, 8, 7]) The deque after reversing deque is : deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 0The number 4 first occurs at a position : 4 The deque after inserting 3 at 5th position is : deque([1, 2, 3, 3, 3, 4, 2, 4]) The count of 3 in deque is : 3 The deque after deleting first occurrence of 3 is : deque([1, 2, 3, 3, 4, 2, 4])7

• Ví dụ 2: Các mục Popping một cách hiệu quả:- This function returns the first index of the value mentioned in arguments, starting searching from beg till end index.
• pop ():- Hàm này được sử dụng để xóa một đối số từ đầu bên phải của deque. :- This function inserts the value mentioned in arguments(a) at index(i) specified in arguments.
• Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.:- This function removes the first occurrence of the value mentioned in arguments.

• deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  2

  deque:  deque([1, 2, 3])
  
  The deque after appending at right is : 
  deque([1, 2, 3, 4])
  
  The deque after appending at left is : 
  deque([6, 1, 2, 3, 4])

  0

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  4

  The deque after extending deque at end is : 
  deque([1, 2, 3, 4, 5, 6])
  The deque after extending deque at beginning is : 
  deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
  The deque after rotating deque is : 
  deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
  The deque after reversing deque is : 
  deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

  5

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  6

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  5

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  6

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  7

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  6

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  9

  deque:  deque([6, 1, 2, 3, 4])
  
  The deque after deleting from right is : 
  deque([6, 1, 2, 3])
  
  The deque after deleting from left is : 
  deque([1, 2, 3])
  

  6

  The number 4 first occurs at a position : 
  4
  The deque after inserting 3 at 5th position is : 
  deque([1, 2, 3, 3, 3, 4, 2, 4])
  The count of 3 in deque is : 
  3
  The deque after deleting first occurrence of 3 is : 
  deque([1, 2, 3, 3, 4, 2, 4])

  6

  The number 4 first occurs at a position : 
  4
  The deque after inserting 3 at 5th position is : 
  deque([1, 2, 3, 3, 3, 4, 2, 4])
  The count of 3 in deque is : 
  3
  The deque after deleting first occurrence of 3 is : 
  deque([1, 2, 3, 3, 4, 2, 4])

  0:- This function counts the number of occurrences of value mentioned in arguments.

Python3

import

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Ví dụ 2: Các mục Popping một cách hiệu quả

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

pop ():- Hàm này được sử dụng để xóa một đối số từ đầu bên phải của deque.

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Ví dụ 3: Truy cập các mục trong một deque

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

INDEX (ELE, BEG, END):- Hàm này trả về chỉ mục đầu tiên của giá trị được đề cập trong các đối số, bắt đầu tìm kiếm từ chỉ số BEG TEST End.

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

Output:    

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 2deque: deque([1, 2, 3]) The deque after appending at right is : deque([1, 2, 3, 4]) The deque after appending at left is : deque([6, 1, 2, 3, 4])0 deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 4The deque after extending deque at end is : deque([1, 2, 3, 4, 5, 6]) The deque after extending deque at beginning is : deque([9, 8, 7, 1, 2, 3, 4, 5, 6]) The deque after rotating deque is : deque([1, 2, 3, 4, 5, 6, 9, 8, 7]) The deque after reversing deque is : deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 5deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 6deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 5deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 6deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 7deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 6deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 9deque: deque([6, 1, 2, 3, 4]) The deque after deleting from right is : deque([6, 1, 2, 3]) The deque after deleting from left is : deque([1, 2, 3]) 6The number 4 first occurs at a position : 4 The deque after inserting 3 at 5th position is : deque([1, 2, 3, 3, 3, 4, 2, 4]) The count of 3 in deque is : 3 The deque after deleting first occurrence of 3 is : deque([1, 2, 3, 3, 4, 2, 4])6The number 4 first occurs at a position : 4 The deque after inserting 3 at 5th position is : deque([1, 2, 3, 3, 3, 4, 2, 4]) The count of 3 in deque is : 3 The deque after deleting first occurrence of 3 is : deque([1, 2, 3, 3, 4, 2, 4])0

• Ví dụ 3: Truy cập các mục trong một deque:- This function is used to add multiple values at the right end of the deque. The argument passed is iterable.
• INDEX (ELE, BEG, END):- Hàm này trả về chỉ mục đầu tiên của giá trị được đề cập trong các đối số, bắt đầu tìm kiếm từ chỉ số BEG TEST End.:- This function is used to add multiple values at the left end of the deque. The argument passed is iterable. Order is reversed as a result of left appends.
• Chèn (i, a):- Hàm này chèn giá trị được đề cập trong các đối số (a) tại chỉ mục (i) được chỉ định trong các đối số.:- This function is used to reverse the order of deque elements.
• Xóa ():- Hàm này loại bỏ sự xuất hiện đầu tiên của giá trị được đề cập trong các đối số.:- This function rotates the deque by the number specified in arguments. If the number specified is negative, rotation occurs to the left. Else rotation is to right.

Python3

import

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

Popleft ():- Hàm này được sử dụng để xóa một đối số từ đầu bên trái của deque.

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([1, 2, 3])

The deque after appending at right is : 
deque([1, 2, 3, 4])

The deque after appending at left is : 
deque([6, 1, 2, 3, 4])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1]) 

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

deque:  deque([6, 1, 2, 3, 4])

The deque after deleting from right is : 
deque([6, 1, 2, 3])

The deque after deleting from left is : 
deque([1, 2, 3])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The number 4 first occurs at a position : 
4
The deque after inserting 3 at 5th position is : 
deque([1, 2, 3, 3, 3, 4, 2, 4])
The count of 3 in deque is : 
3
The deque after deleting first occurrence of 3 is : 
deque([1, 2, 3, 3, 4, 2, 4])

The deque after extending deque at end is : 
deque([1, 2, 3, 4, 5, 6])
The deque after extending deque at beginning is : 
deque([9, 8, 7, 1, 2, 3, 4, 5, 6])
The deque after rotating deque is : 
deque([1, 2, 3, 4, 5, 6, 9, 8, 7])
The deque after reversing deque is : 
deque([7, 8, 9, 6, 5, 4, 3, 2, 1])