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Cải thiện bài viết
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Đọc
Method 1 : Using a nested loop to access the array elements column-wise and then storing their sum in a variable and then
printing it.
Example 1:
Python3
Bàn luận
Hãy cho chúng tôi xem cách tính tổng của tất cả các cột trong mảng 2D. ; & nbsp;
import
numpy
def
colsum[arr, n, m]:
for
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.80
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.83
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.87
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.88
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
for
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 301
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 304
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 305
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 307
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 309
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 305
numpy
2numpy
3import
0numpy
5import
0numpy
7import
4numpy
9import
0def
1import
0def
3def
42D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
0colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
colsum[arr, n, m]:
32D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
6colsum[arr, n, m]:
1colsum[arr, n, m]:
8colsum[arr, n, m]:
9
0
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.87
2colsum[arr, n, m]:
9
42D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
62D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 2D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
82D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
9import
0import
1import
0import
3import
4445
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 30
def
52D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 def
7
Python3
Bàn luận
Hãy cho chúng tôi xem cách tính tổng của tất cả các cột trong mảng 2D. ; & nbsp;
import
numpy
def
colsum[arr, n, m]:
for
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.80
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.83
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.87
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.88
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
for
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 301
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 304
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 305
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 307
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 309
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
0colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
colsum[arr, n, m]:
32D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
6colsum[arr, n, m]:
1colsum[arr, n, m]:
8colsum[arr, n, m]:
9
0
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.87
2colsum[arr, n, m]:
9
42D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
62D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 2D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
82D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
9import
0import
1import
0import
3import
4445
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.8
def
52D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 def
7 Using the sum[] function in NumPy, numpy.sum[arr, axis, dtype, out] function returns
the sum of array elements over the specified axis. To compute the sum of all columns the axis argument should be 0 in sum[] function.
Example 1 :
Python3
Bàn luận
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 305
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 307
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 309
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
0colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
colsum[arr, n, m]:
32D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
6colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.88
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.89
import
0import
1import
0import
3import
44452D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
62D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 2D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
82D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
9import
0import
1import
0import
3import
4445
2D Array: [[ 1 2 3] [ 4 5 6] [ 7 8 9] [10 11 12]] Column-wise Sum: 22 26 30
def
52D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 def
7
Python3
Bàn luận
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.88
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.820
import
02D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.822
import
42D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.824
import
02D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.826
def
42D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.82
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.84
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.85
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
0colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
colsum[arr, n, m]:
32D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.81
def
9colsum[arr, n, m]:
6colsum[arr, n, m]:
12D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.86
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.88
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.89
import
0import
1import
0import
3import
44452D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
62D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
6 2D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
82D Array:
[[1.2 2.3]
[3.4 4.5]]
Column-wise Sum:
4.6 6.8
9import
0import
1import
0import
3import
4445
2D Array: [[1.2 2.3] [3.4 4.5]] Column-wise Sum: 4.6 6.8