Intersection of Two Arrays

 https://leetcode.com/problems/intersection-of-two-arrays/

class Solution {
public:
    vector<int> intersection(vector<int>& nums1, vector<int>& nums2) {
       map<int,int> m;
        vector<int> ans;
        vector<bool> visit(1000);
        for(int i=0;i<nums1.size();i++){
            m[nums1[i]]++;
        }
        for(int i=0;i<nums2.size();i++){
            if(m.find(nums2[i])!=m.end() && !visit[nums2[i]]){
                ans.push_back(nums2[i]);
                visit[nums2[i]]=true;
            }
        }
        return ans;
    }
};

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