text: import { NotImplementedError } from '../extensions/index.js';
  
  /**
   * 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]
   */
   export default function sortByHeight( arr ) {
    let x = 0;
    const result = arr;
    const filtered = arr.filter((i) => i !== -1).sort((a, b) => a - b);
    for (let i = 0; i < arr.length; i++) {
      if (arr[i] !== -1) {
        result[i] = filtered[x];
        x++;
      }
    }
    return result;
  }
  