排序
def bubbleSort(arr):
length = len(arr)
for j in range(length-1,0,-1):
for i in range(j):
if arr[i] > arr[i+1]:
arr[i],arr[i+1] = arr[i+1],arr[i]
return arr
ret = bubbleSort([23,34,56,78,23,45,67,90,78,54])
print(ret)
