编辑代码

#include <stdio.h>
#include <stdlib.h>
#pragma warning (disable:4996)

void bubbleSort1(int arr[],int size) {//顺序
	for (int a = 0; a < size-1; a++){//最多size-1轮比较
		for (int b = 0; b < size - 1 - a; b++){
			if (arr[b ]>arr[b+1]){
				int c = arr[b ];
				arr[b] = arr[b+1];
				arr[b+1] = c;
			}
		}
	}	
}

void bubbleSort2(int arr[], int size) {//逆序
	for (int a = 0; a < size-1; a++) {//最多size-1轮比较
		for (int b = size - 1; b > a; b--) {
			if (arr[b - 1] > arr[b]) {
				int tmp = arr[b - 1];
				arr[b - 1] = arr[b];
				arr[b] = tmp;
			}
		}
	}
}
int main(){
	int arr[] = {11,9,3,20,56,32};
	bubbleSort2(arr,sizeof(arr)/sizeof (arr[0]));
	for (int a = 0; a < sizeof(arr) / sizeof (arr[0]); a++){
		printf(" %d", arr[a]);
		//2 5 8 3 7 9--2 3 5 7 8 9;
	}
	system("pause");
	return 0;
}