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Array - 88. Merge Sorted Array

Array - 88. Merge Sorted Array

88. Merge Sorted Array

Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array.

Note:

  • The number of elements initialized in nums1 and nums2 are m and n respectively.
  • You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additional elements from nums2.

Example:

Input:
nums1 = [1,2,3,0,0,0], m = 3
nums2 = [2,5,6], n = 3

Output: [1,2,2,3,5,6]

思路:

主要体现一个倒着复制的思想,在c语言自带排序源码包里就有不少倒着复制的思想。

代码:

java:

class Solution {

    public void merge(int[] nums1, int m, int[] nums2, int n) {
        int i = m - 1, j = n -1, k = m + n - 1;
        while (i >= 0 && j >= 0) 
            nums1[k--] = nums1[i] >= nums2[j] ? nums1[i--] : nums2[j--];
        
        while (j >= 0)
            nums1[k--] = nums2[j--];
    }
}

标题:Array - 88. Merge Sorted Array
作者:michael
地址:https://www.bitbo-liuyang.com/articles/2019/06/25/1561474592859.html

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