class Solution {
public:
void merge(vector<int>& nums1, int m, vector<int>& nums2, int n) {
int p = m-1, q = n-1, ind = nums1.size()-1;
while(p>=0 && q>=0) {
if(nums2[q] > nums1[p]) {
nums1[ind--] = nums2[q];
q--;
}
else {
nums1[ind--] = nums1[p];
p--;
}
}
while(q >= 0) {
nums1[ind--] = nums2[q--];
}
}
};
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