Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array.
Note:
You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additional elements from nums2. The number of elements initialized in nums1 and nums2 are m and n respectively.
这个题是归并排序的基础。需要熟练掌握。
void merge(vector<int>& nums1, int m, vector<int>& nums2, int n) {
int i=0,j=0,index=0;
vector<int> tmp(nums1);
while(i<m&&j<n)
{
if(nums1[i]<=nums2[j]){
tmp[index++]=nums1[i++];
}else {
tmp[index++]=nums2[j++];
}
}
while(i<m){
tmp[index++]=nums1[i++];
}
while(j<n){
tmp[index++]=nums2[j++];
}
nums1=tmp;
}