Bubble sort algorithm code

Bubble sorting is a relatively simple sorting algorithm in the field of computer science. It repeatedly visits the column of elements to be sorted and compares two adjacent elements in sequence. If the order [such as from large to Small, initials from Z to A] If you make a mistake, swap them over.

void vBubbleSort(int arr[], int len){
    int i, j, temp;
    for (j = 0; j < len - 1; j++){            //每次最大元素就像气泡一样"浮"到数组的最后
        for (i = 0; i < len - 1 - j; i++){    //依次比较相邻的两个元素,使较大的那个向后移
            if(arr[i] > arr[i + 1]){            //交换两个数
                temp = arr[i];
                arr[i] = arr[i + 1];
                arr[i + 1] = temp;
            }
        }
    }
}
void vBubbleSortChange(int arr[], int len){
    int i,j,temp;
    int swapped = 1;
    for (j = 0; swapped; j++){            //每次最大元素就像气泡一样"浮"到数组的最后
        swapped = 0;
        for (i = 0; i < len - 1 - j; i++){    //依次比较相邻的两个元素,使较大的那个向后移
            if(arr[i] > arr[i + 1]){            //交换两个数
                temp = arr[i];
                arr[i] = arr[i + 1];
                arr[i + 1] = temp;
                swapped = 1;
            }
        }
//        if(    swapped == 0) {j = len-1;}//如果没有元素交换，说明序列是顺序的,退出循环
    }
}
void vCockTailSort(int arr[],int len){
    int tmp,i,left=0,right = len-1;
    while(left < right){
        for(i=left;i<right;i++){//正向冒泡，确定最大值
            if(arr[i]>arr[i+1]){
                tmp = arr[i];
                arr[i] = arr[i+1];
                arr[i+1] = tmp;
            }
        }
        right--;
        for(i=right;i>left;i--){//反向冒泡，确定最小值
            if(arr[i]<arr[i-1]){
                tmp = arr[i];
                arr[i] = arr[i-1];
                arr[i-1] = tmp;
            }
        }
        left++;
    }
}
void vCockTailSortChange(int arr[],int len){
    int tmp,i,left=0,right = len-1;
    int swapped = 1;
    int bound = 0;//记录某趟遍历的最后一次交换元素的位置，优化减少循环次数
    while(swapped){//如果没有元素交换，说明序列是顺序的
        swapped = 0;
        for(i=left;i<right;i++){//正向冒泡，确定最大值
            if(arr[i]>arr[i+1]){
                tmp = arr[i];
                arr[i] = arr[i+1];
                arr[i+1] = tmp;
                swapped = 1;
                bound = i;
            }
        }
        right=bound;//缩小遍历边界
        for(i=right;i>left;i--){//反向冒泡，确定最小值
            if(arr[i]<arr[i-1]){
                tmp = arr[i];
                arr[i] = arr[i-1];
                arr[i-1] = tmp;
                swapped = 1;
                bound = i;
            }
        }
        left=bound;//缩小遍历边界
    }
}

The above is the detailed content of Bubble sort algorithm code. For more information, please follow other related articles on the PHP Chinese website!