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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Sales by Match
  5. Discussions

Sales by Match

  • alban_tyrex
     + 0 comments

    Here is my c++ solution , you can find the video explanation here : https://youtu.be/HPIhFXx_DVM

    int sockMerchant(int n, vector<int> ar) {
    map<int, int>mp;
    int result = 0;
    for(int i = 0; i < ar.size(); i++){
        if(mp[ar[i]]){
            result ++;
            mp.erase(ar[i]);
            continue;
        }
        mp[ar[i]]++;
    }
    return result;
}