python——冒泡排序练习

冒泡排序：就是将列表里的混乱的整形或其他进行有效的排序。
test1:

num=list('2574')
n=len(num)
print(num)
for i in range(0,n):
for j in range(i+1,n):
if num[i]>num[j]:    #a>b
c=num[j]         #c=b
num[j]=num[i]    #b=a
num[i]=c         #a=c
print(num)
print('排序最总的结果为：'+ str(num))

test2

num=list('6457')
n=len(num)
print(num)
for i in range(0,n):
for j in range(i+1,n):
if num[i]>num[j]:
num[i],num[j]=num[j],num[i]
print(num)
print('排序最总的结果为：'+ str(num))

test3

import random
num=[]
x=int(input('请问需要多少个随机数'))
for i in range(x):
num.append(random.randint(1,100))
n=len(num)
print(num)
for i in range(0,n):
for j in range(i,n):
if num[i]>num[j]:
num[i],num[j]=num[j],num[i]
print(num)