选择排序

  public static void main(String[] args) {

         int[] arr = {24, 69, 80, 57, 13};

         for (int i = 0; i < arr.length - 1; i++) {                      

               for (int j = i + 1; j < arr.length; j++) {

                    if(arr[i] > arr[j]) {

                          int temp = arr[i];

                          arr[i] = arr[j];

                          arr[j] = temp;             

                    }

               }

         }

         for (int i = 0; i < arr.length; i++) {

               System.out.print(arr[i] + " ");

         }

    }