JavaScript中數組的選擇排序和冒泡排序

選擇排序

• 代碼

  <script>
     let arr = [1, 4, 6, 8, -2];
     console.log(arr);
     for (let i = 0; i < arr.length; i++) {
          for (let j = i; j < arr.length; j++) {
              if (arr[i] > arr[j + 1]) {
                  let temp = arr[i];
                  arr[i] = arr[j+1];
                  arr[j+1] = temp;
              }
          }
      }
      console.log(arr);
  </script>
  

• 運行效果
  

冒泡排序

• 代碼

  <script>
      let arr = [5, 9, -4, 3, 2];
      console.log(arr);
      for (let i = 0; i < arr.length; i++) {
          for (let j = 0; j < arr.length - i; j++) {
              if (arr[j] > arr[j + 1]) {
                  let temp = arr[j];
                  arr[j] = arr[j+1];
                  arr[j+1] = temp;
              }
          }
      }
      console.log(arr);
  </script>
  

• 運行效果