// Question Link: https://www.geeksforgeeks.org/problems/sort-a-stack/1?utm_source=youtube&utm_medium=collab_striver_ytdescription&utm_campaign=sort-a-stack ...

public static void merge(int[] nums1, int m, int[] nums2, int n) { int i = m - 1; // pointer at end of real elements in nums1 int j = n - 1; // pointer at end of nums2 int k = m + n - 1; // pointer at ...