python sort a 2d array by custom function
>>> a = [
[12, 18, 6, 3],
[ 4, 3, 1, 2],
[15, 8, 9, 6]
]
>>> a.sort(key=lambda x: x[1])
>>> a
[[4, 3, 1, 2],
[15, 8, 9, 6],
[12, 18, 6, 3]]python sort a 2d array by custom function
>>> a = [
[12, 18, 6, 3],
[ 4, 3, 1, 2],
[15, 8, 9, 6]
]
>>> a.sort(key=lambda x: x[1])
>>> a
[[4, 3, 1, 2],
[15, 8, 9, 6],
[12, 18, 6, 3]]Copyright © 2021 Codeinu
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