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

Sales by Match

  • JBallin
     + 5 comments

    Similar solution in JavaScript:

    function sockMerchant(n, ar) {
    const colors = {};
    let matches = 0;
    for (let i = 0; i < n; i++) {
        if (colors[ar[i]]) {
            matches++;
            colors[ar[i]] = 0;
        } else {
            colors[ar[i]] = 1;
        }
    }
    return matches;
}