python3 练习题100例 （五）

题目五：输入三个整数x,y,z，请把这三个数由小到大输出。

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

""" 题目五：输入三个整数x,y,z，请把这三个数由小到大输出。"""

__author__ = 'fan lijun'

one = eval(input('请输入三个数：'))
two = eval(input('请输入三个数：'))
three = eval(input('请输入三个数：'))

#方法一：使用内置排序函数
lst = [one, two, three]
print(lst.sort())

#方法二：我自己写一个，锻炼一下if  else
lst2 = []

#获得最小数
def minnumber(one, two, three):
    if one < two:
        if one < three:
            lst2.append(one)
        else:
            lst2.append(three)
    else:
        if two < three:
            lst2.append(two)
        else:
            lst2.append(three)

def maxnumber(one, two, three):
    if one > two:
        if one > three:
            lst2.append(one)
        else:
            lst2.append(three)
    else:
        if two > three:
            lst2.append(two)
        else:
            lst2.append(three)
minnumber(one, two, three)
maxnumber(one, two, three)

if lst2[0] == one:
    if lst2[1] == two:
        lst2.insert(1, three)
    else:
        lst2.insert(1, two)
elif lst2[0] == two:
    if lst2[1] == three:
        lst2.insert(1, one)
    else:
        lst2.insert(1, three)
else:
    if lst2[1] == two:
        lst2.insert(1, one)
    else:
        lst2.insert(1, three)

print(lst2)