c++
class Solution {
public:
void merge(vector<int>& nums1, int m, vector<int>& nums2, int n) {
if (nums2.empty())
return;
while (m > 0 && n > 0) {
if (nums1[m - 1] > nums2[n - 1]) {
nums1[m + n - 1] = nums1[m - 1];
m--;
}
else{
nums1[m + n - 1] = nums2[n - 1];
n--;
}
}
while (m == 0 && n > 0) {
nums1[n - 1] = nums2[n - 1];
n--;
}
}
};
python
class Solution(object):
def merge(self, nums1, m, nums2, n):
"""
:type nums1: List[int]
:type m: int
:type nums2: List[int]
:type n: int
:rtype: void Do not return anything, modify nums1 in-place instead.
"""
if not nums2:
return
while m>0 and n>0:
if nums1[m-1] > nums2[n-1]:
nums1[m+n-1] = nums1[m-1]
m -= 1
else:
nums1[m+n-1] = nums2[n-1]
n -= 1
while m==0 and n>0:
nums1[n-1] = nums2[n-1]
n -= 1