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Missing Numbers

  • alban_tyrex
     + 0 comments

    Here is my c++ solution, you can watch the explanation here : https://youtu.be/6AXUA5_XwUw

    vector<int> missingNumbers(vector<int> arr, vector<int> brr) {
    map<int, int> mp;
    for(int i = 0; i < brr.size(); i++) mp[brr[i]]++;
    for(int i = 0; i < arr.size(); i++) mp[arr[i]]--;
    map<int, int>::iterator it;
    vector<int> result;
    for(it = mp.begin(); it != mp.end(); it++)
        if(it->second > 0) result.push_back(it->first);
    
    return result;
}