(LintCode) No 5: Swap Two Integers in Array

题目描述：交换一个数列中两个数字的位置。
代码如下：public class Solution {
/**
* @param A: An integer array
* @param index1: the first index
* @param index2: the second index
* @return: nothing
*/
public void swapIntegers(int[] A, int index1, int index2) {
int n;
n = A[index1];
A[index1] = A[index2];
A[index2] = n;// write your code here
}
}