problem
349. Intersection of Two Arrays
题意,是求解两个数组的交集。
solution
class Solution {
public:
vector<int> intersection(vector<int>& nums1, vector<int>& nums2) {
unordered_set<int> tmp(nums1.begin(), nums1.end());
vector<int> res;
for(auto a:nums2)
{
if(tmp.count(a))
{
res.push_back(a);
tmp.erase(a);
}
}
return res;
}
};
参考
1. Leetcode_349. Intersection of Two Arrays;
完