冒泡排序

维基百科

Bubble sort is a simple sorting algorithm that repeatedly steps through the list to be sorted, compares each pair of adjacent items and swaps them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted.

复杂度

步骤

Java语言实现

public void bubbleSort(int[] arr) {
      boolean swapped = true;
      int j = 0;
      int tmp;
      while (swapped) {
            swapped = false;
            j++;
            for (int i = 0; i < arr.length - j; i++) {                                       
                  if (arr[i] > arr[i + 1]) {                          
                        tmp = arr[i];
                        arr[i] = arr[i + 1];
                        arr[i + 1] = tmp;
                        swapped = true;
                  }
            }
      }
}

C语言实现

void bubbleSort(int arr[], int n) {
      bool swapped = true;
      int j = 0;
      int tmp;
      while (swapped) {
            swapped = false;
            j++;
            for (int i = 0; i < n - j; i++) {
                  if (arr[i] > arr[i + 1]) {
                        tmp = arr[i];
                        arr[i] = arr[i + 1];
                        arr[i + 1] = tmp;
                        swapped = true;
                  }
            }
      }
}

The Bubble sort algorithm Bubble Sort