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) {
    //throw new NotImplementedError('Not implemented');
    let noSort = [];
    arr.forEach((e,i) => {
      if (e===-1) noSort.push(i);
    });
    arr = arr.filter((e)=>e!==-1).sort((a,b)=>a-b);
    noSort.forEach((e,i)=>arr.splice(e, 0, -1));
    return arr;
  }
  