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

Sales by Match

  • kuzjka
     + 3 comments

    Or a BitSet if you wanna save some more memory :)

    BitSet bitSet = new BitSet(COLOR_SIZE);
        for (int i = 0; i < size; i++) {
            int color = scanner.nextInt();
            if (bitSet.get(color)) pairs++;
            bitSet.flip(color);
        }