常用算法的python实现

时间：2022-07-23 00:29:38

1、乘法表

#! -*- coding:utf-8  -*-

for i in range(1,10):

    for j in range(1,i+1):

        print('%d*%d=%d\t' % (i, j, i*j)),

    print'\r'

1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81

2、回文数

#! -*- coding:utf-8  -*-

num = raw_input('请输入一个整数： ')

for i in range(len(num)/2):

    if num[i] == num[-i-1]:

        print('%s 是一个回文数' % num)

    else:

        print('%s 不是一个回文数' % num)

3、阶乘

#! -*- coding:utf-8  -*-

def f(n):

    if n < 0:

        print('负数没有阶乘')

    elif n == 0:

        return 1

    elif n == 1:

        return 1

    else:

        return n*f(n-1)

def jiesum(n):

    sum = 0

    for i in range(1, n+1):

        sum += f(i)

    return sum

number = int(raw_input('请输入一个整数： '))

result = f(number)

sum = jiesum(number)

print('%d 的阶乘是%d' % (number, result))

print('%d 的阶乘和是%d' % (number, sum))

4、字符串去重

#! -*- coding:utf-8  -*-

# 字符串去重

str = 'zhang jingjing'

lst = []

for i in str:

    if i not in lst:

        lst.append(i)

print ''.join(lst)

# 把字符串sign替换成空格

str1 = 'title=华为招聘会&time=20190305&sign=zhang&name=jing'

lst1 = []

for i in str1.split('&'):

    if i.startswith('sign='):

        lst1.append('sign= ')

    else:

        lst1.append(i)

print '&'.join(lst1)

5、冒泡排序法

#! -*- coding:utf-8  -*-

# list = [1,5,4,78]

# n个数比n-1轮

# 1  - n-1-1

# i   n-i-1

num = raw_input('输入一组数： ')

# print(num)    str

list = num.split(',')    #  list

# list = list(num)

print(list)

for i in range(len(list)-1):

    for j in range(len(list)-i-1):

        if list[j]>list[j+1]:

            list[j],list[j+1] = list[j+1],list[j]

print(list)

6、自动生成扑克牌，输入1随机发一张牌，输入2随机发2张牌。。。输入0停止发牌并把之前的牌全部返回

#! -*- coding:utf-8  -*-

import random

def auto():

    pokers = []

    poker = []

    list1 = ['R', 'B', 'F', 'M']

    list2 = ['A', 2, 3, 4, 5, 6, 7, 8, 9, 10, 'J', 'K', 'Q']

    for i in list1:

        for j in list2:

            poker.append(i)

            poker.append(j)

            pokers.append(poker)

            poker = []

    pokers.append(['bighero'])

    pokers.append(['smallhero'])

    # random.shuffle(pokers)

    return pokers

def fapai(poker, n):

    if n != 0:

        return random.sample(poker, n)

    else:

        print('请输入一个整数')

pokers = auto()

print(pokers)

result = []

while True:

    number = int(raw_input('请输入一个整数： '))

    if number != 0:

        rand1 = fapai(pokers, number)

        print(rand1)

        for i in rand1:

            result.append(i)

    else:

        print(result)

        break

学习路上的同志共勉！

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