Swap Two Integers in Array

Swap Two Integers in Array

Given an array and two indexes, swap the integers on the two indexes.

Example

Given [1,2,3,4] and index1 = 2, index2 = 3. The array will change to [1,2,4,3] after swapping. You don't need return anything, just swap the integers in-place.

corner case: index1 == index2，不需要处理

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

public class Solution { /** * @param A an integer array * @param index1 the first index * @param index2 the second index * @return void */ public void swapIntegers(int[] A, int index1, int index2) { // Write your code here if (index1 != index2){ A[index1] = A[index1] ^ A[index2]; A[index2] = A[index1] ^ A[index2]; A[index1] = A[index1] ^ A[index2]; } } }