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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Sequence Equation
  5. Discussions

Sequence Equation

  • alban_tyrex
     + 0 comments

    Here is my O(N) c++ solution, you can watch the explanation here : https://youtu.be/D9nfVOmmv7Q

    vector<int> permutationEquation(vector<int> p) {
    vector<int> indexes(p.size() + 1), result;
    for(int i = 1; i <= p.size(); i++) indexes[p[i-1]] = i;
    for(int i = 1; i <= p.size(); i++) result.push_back(indexes[indexes[i]]);
    return result;
}