JS数组方法练习-根据字符串最后一位大小排序

<script>
  let Str = 'Nothing is to be got without pains but poverty';
  let changeString = 'poverty9 Nothing1 without6 pains7 but8 is2 to3 be4 got5';
  //   根据单词末尾的下标，还原句子

  // 方法1 sort
  let processString1 = changeString.split(' ').sort((a, b) => {
    return a.slice(- 1) - b.slice(- 1);
  }).join(' ');
  console.log(processString1);
  //   方法2 map
  let processString2 = changeString.split(' ').map((e) => {
    return {
      index: e.slice(- 1),
      value: e.slice(0, e.length - 1)
    };
  }).sort((a, b) => {
    return a.index - b.index;
  }).map((e) => {
    return e.value;
  }).join(' ');
  console.log(processString2);
</script>