text: /**
   * Given an array with heights, sort them except if the value is -1.
   *
   * @param {Array} arr
   * @return {Array}
   *
   * @example
   * arr = [-1, 150, 190, 170, -1, -1, 160, 180]
   *
   * The result should be [-1, 150, 160, 170, -1, -1, 180, 190]
   */
  function sortByHeight(arr) {
    const newArr = arr.filter((item) => (item !== -1)).sort((a, b) => a - b);
    const indexOnes = arr.map((item, index) => ((item === -1)
      ? index : undefined)).filter((item) => (item !== undefined));
    for (let i = 0; i < indexOnes.length; i++) {
      newArr.splice(indexOnes[i], 0, -1);
    }
    return newArr;
  }
  
  module.exports = sortByHeight;
  