text: /**
   * There's a list of file, since two files cannot have equal names,
   * the one which comes later will have a suffix (k),
   * where k is the smallest integer such that the found name is not used yet.
   *
   * Return an array of names that will be given to the files.
   *
   * @param {Array} names
   * @return {Array}
   *
   * @example
   * For input ["file", "file", "image", "file(1)", "file"],
   * the output should be ["file", "file(1)", "image", "file(1)(1)", "file(2)"]
   *
   */
  function renameFiles(names) {
    const set = {};
    const res = [];
    for (let i = 0; i < names.length; i++) {
      set[names[i]] = 0;
    }
    for (let i = 0; i < names.length; i++) {
      if (set[names[i]] === 0) {
        if (res.includes(names[i])) {
          res.push(`${names[i]}(${set[names[i]] + 1})`);
        } else {
          res.push(names[i]);
          set[names[i]]++;
        }
      } else {
        res.push(`${names[i]}(${set[names[i]]++})`);
      }
    }
    return res;
  }
  
  module.exports = renameFiles;
  