for(int i = 0; i < grades.length; i++) //create rows for(int j = 0; j < grades[i].length; j++) //create columns ...

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 ...