LeetCode——Merge Sorted Array

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Given two sorted integer arrays A and B, merge B into A as one sorted array.

Note:

You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are m andn respectively.

原题链接:https://oj.leetcode.com/problems/merge-sorted-array/

题目:给定两个有序数组A和B,把B归并到A中为一个有序数组。

之前做过了类似的题,只是之前的题是新建一个数组,而这题是在原数组之上归并。

public void merge(int A[], int m, int B[], int n) {int i = m - 1;int j = n - 1;int k = m + n - 1;while (k >= 0) {if (j < 0 || (i >= 0 && A[i] > B[j]))A[k--] = A[i--];elseA[k--] = B[j--];}}


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