Sorting a 2D Array according to values in any given column in Java
We are given a 2D array of order N X M and a column number K ( 1<=K<=m). Our task is to sort the 2D array according to values in the Column K.
Input : If our 2D array is given as (Order 4X4) 39 27 11 42 10 93 91 90 54 78 56 89 24 64 20 65 Sorting it by values in column 3 Output : 39 27 11 42 24 64 20 65 54 78 56 89 10 93 91 90
The Idea is to use Arrays.sort in Java.
39 27 11 42 24 64 20 65 54 78 56 89 10 93 91 90
Time complexity : O(n Log n) where n is number of rows. Here assumption is that the sort() function uses a O(n Log n) sorting algorithm.
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