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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 19: Interfaces
  5. Discussions

Day 19: Interfaces

  • Inkling
     + 3 comments

    Yeah it's a very easy optimization, here's how mine looked:

    class Calculator : AdvancedArithmetic {
  
  public int divisorSum(int n) {
    int sum = n;
    for (int i = 1, half = n/2; i <= half; i++) {
      if (n % i == 0) sum += i;
    }
    return sum;
  }
  
}