题目
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 and nrespectively.
代码
public class Solution {
public void merge(int A[], int m, int B[], int n) {
while (m > 0 && n > 0) {
if (A[m-1] > B[n-1]) {
A[m+n-1] = A[m-1];
m--;
} else {
A[m+n-1] = B[n-1];
n--;
}
}
while (n > 0) {
A[n-1] = B[n-1];
n--;
}
}
}
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* 本文来自博客 “李博Garvin“
* 转载请标明出处:http://blog.youkuaiyun.com/buptgshengod
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本文介绍了一种巧妙的方法来合并两个已排序的整数数组A和B成为一个有序数组。该方法利用了数组A预留的空间,通过从后向前比较A和B中的元素并放置最大者的方式进行合并,最后将B中剩余元素依次前移填充到A中。

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