How to sort first row in numpy array and have that sort the second row?-CodePudding

I have an array that looks like this

array = [[3,5,4,2,1,6,8],[23,44,52,1,23,22,58]]

How do I sort the first row and have it change the result of the second row as well? This is what I mean?

new_array = [[1,2,3,4,5,6,8],[23,1,23,52,44,22,58]]

CodePudding user response：

You can use argsort, array[0].argsort() gives the indices that will sort the first row and then use the indices to reorder all columns:

array[:, array[0].argsort()]
array([[ 1,  2,  3,  4,  5,  6,  8],
       [23,  1, 23, 52, 44, 22, 58]])