# 4、冒泡排序 以及反转 和 排序方法 升序和降序a = [-1,12,31,2,134,2345,2]for i in range(0,len(a)-1,1): for j in range(0,len(a)-1-i,1): if a[j] > a[j+1]: tem = 0 tem = a[j] a[j] = a[j+1] a[j+1] = temfor i in a: print(i,end=" ")