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  1. Practice
  2. Data Structures
  3. Arrays
  4. Sparse Arrays
  5. Discussions

Sparse Arrays

  • sarathy_v_krish1 + 1 comment

    C++ solution :

    vector<int> matchingStrings(vector<string> strings, vector<string> queries) {
    map<string, int> m;
    vector<int> v;
    for (string s:strings)  m[s]++;
    for (string q:queries) v.push_back(m[q]);
    return v;
}
    • vogias + 0 comments

      Thumbs up. I guess we could adapt the loops a bit:

          for (const auto& s : strings)  m[s]++;
    for (const auto& q : queries) v.push_back(m[q]);