【牛客编程题】python入门103题（输入&类型，字符串&列表&字典&元组，运算&条件&循环，函数&类&正则）

【牛客编程题】python入门103题（输入&类型，字符串&列表&字典&元组，运算&条件&循环，函数&类&正则）
做题链接：https://www.nowcoder.com/exam/oj?page=1&tab=Python%E7%AF%87&topicId=314

01 输入输出

NP1 Hello World!

print("Hello World!")
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NP2 多行输出

print("Hello World!")
print("Hello Nowcoder!")
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NP3 读入字符串

s = input()
print(s)
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NP4 读入整数数字

a = int(input())
print(a)
print("")
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NP5 格式化输出（一）

s = input()
print("I am %s and I am studying Python in Nowcoder!"%s)
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NP6 牛牛的小数输出

x = float(input())
print("%.2f"%x)
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02 类型转换

NP7 小数化整数

x = float(input())
print(int(x))
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NP8 为整数增加小数点

x = int(input())
print("%.1f" % x)
print("")
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NP9 十六进制数字的大小

x = int(input(), 16)
print(x)
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03 字符串

NP10 牛牛最好的朋友们

a, b = input(), input()
print(a+b)
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NP11 单词的长度

a = input()
print(len(a))
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NP12 格式化输出（二）

str = input()
print(str.lower())
print(str.upper())
print(str.title())
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NP13 格式化输出（三）

s = input()
print(s.strip(" \t"))
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NP14 不用循环语句的重复输出

a = input()
print(a*100)
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NP15 截取用户名前10位

a = input()
print(a[:10])
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04 列表

NP16 发送offer

offer_list=['Allen','Tom']
for i in offer_list:
    print('%s, you have passed our interview and will soon become a member of our company.' %i)
offer_list[1]='Andy'
for i in offer_list:
    print('%s, welcome to join us!' %i )
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NP17 生成列表

x = input().split(' ')
print(x)
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NP18 生成数字列表

a = input().split(' ')
b = []
for i in a:
    b.append(int(i))
print(b)
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NP19 列表的长度

x = input().split(' ')
print(len(x))
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NP20 增加派对名单（一）

x = input().split(' ')
x.append('Allen')
print(x)
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NP21 增加派对名单（二）

x = input().split(" ")
x.insert(0,"Allen")
print(x)
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NP22 删除简历

x = input().split(" ")
x.pop(0)
print(x)
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NP23 删除好友

x = input().split(" ")
y = input()
x.remove(y)
print(x)
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NP24 淘汰排名最后的学生

x = input().split()
x.pop()
x.pop()
x.pop()
print(x)
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NP25 有序的列表

my_list=['P','y','t','h','o','n']
print(sorted(my_list))
print(my_list)
print(sorted(my_list,reverse=True))

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NP26 牛牛的反转列表

num=[3, 5, 9, 0, 1, 9, 0, 3]
num.reverse()
print(num)
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NP27 朋友们的喜好

name = ['Niumei','YOLO','Niu Ke Le','Mona']
food = ['pizza','fish','potato','beef']
number = [3,6,0,3]
friends = []
friends.append(name)
friends.append(food)
friends.append(number)
print(friends)

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NP28 密码游戏

a = input()
li = []
for i in a:
    x = (int(i)+3)%9
    li.append(x)
li[0],li[2] = li[2],li[0]
li[1],li[3] = li[3],li[1]
for i in li:
    print(i,end="")
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NP29 用列表实现栈

stack = [1, 2, 3, 4, 5]
for i in range(0,2):
    stack.pop()
    print(stack)
a = input()
stack.append(int(a))
print(stack)

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NP30 用列表实现队列

queue = [1, 2, 3, 4, 5]
for i in range(0,2):
    queue.pop(0)
    print(queue)
a = int(input())
queue.append(a)
print(queue)
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NP31 团队分组

group_list = ['Tom','Allen','Jane','William','Tony']
print(group_list[0:2])
print(group_list[1:4])
print(group_list[-2:])
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05 运算符

NP32 牛牛的加减器

x = int(input())
y = int(input())
print(x+y)
print(x-y)
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NP33 乘法与幂运算

x = int(input())
y = int(input())
print(x*y)
print(x**y)
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NP34 除法与取模运算

a = int(input())
b = int(input())
print('{0} {1}'.format(a//b,a%b))
print('{:.2f}'.format(float(a)/b))
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NP35 朋友的年龄是否相等

a = input().split()
a = list(map(int,a))
print(a[0]==a[1])
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NP36 谁的数字大

a = input().split()
a = list(map(int,a))
print(a[0]>a[1])
print(a[0]<a[1])
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NP37 不低于与不超过

k, x, y = input().split(" ")
print(k<=x)
print(k>=y)
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NP38 牛牛的逻辑运算

x, y = map(int,input().split())
print(x and y)
print(x or y)
print(not x)
print(not y)
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NP39 字符串之间的比较

s1 = input()
s2 = input()
print(s1 == s2)
print(s1.lower() == s2.lower())
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NP40 俱乐部的成员

a = input().split()
b = input()
print(b in a)
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NP41 二进制位运算

x, y = map(int, input().split(' '))
print(x&y)
print(x|y)
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NP42 公式计算器

x, y, z, k = map(int, input().split())
print((x+y)*(z-k))
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06 条件语句

NP43 判断布尔值

x = int(input())
if x==1:
    print("Hello World!")
else:
    print("Erros!")
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NP44 判断列表是否为空

li = []
if li:
    print("my_list is not empty!")
else:
    print("my_list is empty!")

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NP45 禁止重复注册

new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi']
current_user = ['Niuniu','Niumei','GURR','LOLO']
current_user = [i.lower() for i in current_user]
for i in new_users:
    if i.lower() in current_user:
        print('The user name {} has already been registered! Please change it and try again!'.format(i))
    else:
        print('Congratulations, the user name {} is available!'.format(i))
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NP46 菜品的价格

food = {'pizza':10,'rice':2,'yogurt':5,'others':8}
x = input()
if x not in food.keys():
    x = 'others'
for i in food.keys():
    if i==x:
        print(food[i])
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NP47 牛牛的绩点

a = {'A':4.0, 'B':3.0, 'C':2.0, 'D':1.0, 'F':0}
sum1 = 0
sum2 = 0
while True:
    x = input()
    if x.lower()=='false':
        break
    y = int(input())
    sum1 += a[x]*y
    sum2 += y
print("%.2f"%(sum1/sum2))
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NP48 验证登录名与密码

username = input()
password = input()
if username == 'admis':
    if password == 'Nowcoder666':
        print('Welcome!')
    else:
        print("user id or password is not correct!")
else:
    print("user id or password is not correct!")
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07 循环语句

NP49 字符列表的长度

my_list = ['P', 'y', 't', 'h', 'o', 'n']
print('Here is the original list:')
print(my_list)
print(' ')
print('The number that my_list has is:')
print(len(my_list))
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NP50 程序员节

users_list=['Niuniu' ,'Niumei' , 'Niu Ke Le' ]
for i in  users_list:
    print( 'Hi, %s! Welcome to Nowcoder!' %i)
print("Happy Programmers' Day to everyone!")

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NP51 列表的最大与最小

li = [ i for i in range(10,51) ]
print(li)
print(li[0],li[-1])

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NP52 累加数与平均值

age = list(map(int,input().split(" ")))
print(sum(age), round(sum(age)/len(age),1))
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NP53 前10个偶数

li = [i for i in range(0,20,2)]
for i in li:
    print(i)
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NP54 被5整除的数字

li = [i for i in range(1,51) if i%5 == 0]
for i in li:
    print(i)
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NP55 2的次方数

li = []
for i in range(1,11):
    li.append(2**i)
for i in li:
    print(i)
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NP56 列表解析

print([ i for i in range(0,10)])
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NP57 格式化清单

li = ['apple', 'ice cream', 'watermelon', 'chips', 'hotdogs', 'hotpot']
while li:
    li.pop()
    print(li)
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NP58 找到HR

users_list=['Niuniu','Niumei','HR','Niu Ke Le','GURR','LOLO']
for i in users_list:
    if i=="HR":
        print('Hi, HR! Would you like to hire someone?')
    else:
        print('Hi, {}! Welcome to Nowcoder!'.format(i))

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NP59 提前结束的循环

list_num = [3, 45, 9, 8, 12, 89, 103, 42, 54, 79]
x = int(input())
for item in list_num:
    if item == x:
        break
    print(item)
    

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NP60 跳过列表的某个元素

[print(i,end=" ") for i in range(1,16) if i!=13]
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NP61 牛牛的矩阵相加

n=int(input())
a=[[1*n,2*n,3*n],[4*n,5*n,6*n],[7*n,8*n,9*n]]
print(a)

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08 元组

NP62 运动会双人项目

tuple1 = (input(), input())
print(tuple1)
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NP63 修改报名名单

a=('Niuniu','Niumei')
print(a)
try:
    a[1]='Niukele'
except:
    print('The entry form cannot be modified!')
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NP64 输出前三同学的成绩

t = tuple(input().split(" "))
print(t[:3])
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NP65 名单中出现过的人

a = ('Tom', 'Tony', 'Allen', 'Cydin', 'Lucy', 'Anna')
print(a)
x = input()
if x in a:
    print('Congratulations!')
else:
    print('What a pity!')
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NP66 增加元组的长度

a = tuple(range(1, 6))
print(a)
print(len(a))
b = tuple(range(6,11))
c = a+b
print(c)
print(len(c))
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09 字典

NP67 遍历字典

operators_dict={'<':'less than','==':'equal'}
print('Here is the original dict:')
for key,value in sorted(operators_dict.items()):
    print(f'Operator {key} means {value}.')

operators_dict['>']='greater than'
print()
print('The dict was changed to:')
for key,value in sorted(operators_dict.items()):
    print(f'Operator {key} means {value}.')
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NP68 毕业生就业调查

name=['Niumei','Niu Ke Le','GURR','LOLO']
result={'Niumei': 'Nowcoder','GURR': 'HUAWEI'}
for i in name:
        if i in result.keys():
            print(f'Hi, {i}! Thank you for participating in our graduation survey!')    
        else:
            print(f'Hi, {i}! Could you take part in our graduation survey?')
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NP69 姓名与学号

my_dict_1 = {'name': 'Niuniu', 'Student ID': 1}
my_dict_2 = {'name': 'Niumei', 'Student ID': 2}
my_dict_3 = {'name': 'Niu Ke Le', 'Student ID': 3}
dict_list = []

dict_list.append(my_dict_1)
dict_list.append(my_dict_2)
dict_list.append(my_dict_3)

for i in dict_list:
     print(f"{i['name']}'s student id is {i['Student ID']}.")

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NP70 首都

cities_dict={'Beijing': {"Capital": 'China'},
             'Moscow': {"Capital": 'Russia'},
             'Paris': {"Capital": 'France'}
            }
for i in sorted(cities_dict.keys()):
    print('%s is the capital of %s!'%(i,cities_dict[i]['Capital']))
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NP71 喜欢的颜色

result_dict={'Allen':['red','blue','yellow'],'Tom':['green','white','blue'],'Andy':['black','pink']}
for key in sorted(result_dict.keys()):
    print(f"{key}'s favorite colors are:")
    for value in result_dict[key]:
        print(value)
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NP72 生成字典

name = list(input().split())
lang = list(input().split())
dict1 = {name:lang for name,lang in zip(name,lang)}
print(dict1)
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NP73 查字典

dict1 = {'a': ['apple', 'abandon', 'ant'], 'b': ['banana', 'bee', 'become'], 'c': ['cat', 'come'], 'd': 'down'}
a = input()
for x in dict1[a]:
    print(x,end=' ')
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NP74 字典新增

dic={'a': ['apple', 'abandon', 'ant'], 'b': ['banana', 'bee', 'become'], 'c': ['cat', 'come'], 'd': 'down'}
x = input()
y = input()
dic[x] = y
print(dic)
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NP75 使用字典计数

s = input()
dict1 = dict()
for ch in s:
    if ch in dict1:
        dict1[ch] += 1
    else :
        dict1[ch] = 1
print(dict1)
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10 内置函数

NP76 列表的最值运算

x = list(map(int, input().split()))
print(max(x))
print(min(x))

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NP77 朋友的年龄和

x = list(map(int, input().split()))
print(sum(x))
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NP78 正数输出器

x = int(input())
print(abs(x))
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NP79 字母转数字

s = input()
print(ord(s[0]))
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NP80 数字的十六进制

x = int(input())
print(hex(x))
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NP81 数字的二进制表示

x = int(input())
print(bin(x))
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NP82 数学幂运算

x, y = map(int,input().split())
print(pow(x,y))
print(pow(y,x))
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NP83 错误出现的次数

x = list(map(int,input().split()))
print(x.count(0))
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NP84 列表中第一次出现的位置

x = input().split()
print(x.index('NiuNiu'))
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NP85 字符的类型比较

x = input()
print(x.isalpha())
print(x.isdigit())
print(x.isspace())
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NP86 字符子串的查找

s = input()
print(s.find("NiuNiu"))
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NP87 子串的数量

s = input()
print(s.count("Niu"))
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NP88 句子拆分

x = input().split(' ')
print(x)
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NP89 单词造句

x = []
while 1:
    s = input()
    if s=="0": break
    else : x.append(s)
print(" ".join(x))
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NP90 修正错误的字母

x = input()
print(x.replace('a*','ab'))
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NP91 小数位修正

x = float(input())
print(round(x,2))

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NP92 公式计算器

s = input()
print(eval(s))
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NP93 创建集合

s = set(input().split(' '))
print(sorted(list(s)))
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11 面向对象

NP94 函数求差

def cal(x, y):
    return x-y
x = int(input())
y = int(input())
print(cal(x,y))
print(cal(y,x))
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NP95 兔子的数量

def f(n):
    if n == 1: return 2
    elif n == 2 : return 3
    else : return f(n-1)+f(n-2)
x = int(input())
print(f(x))
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NP96 球的表面积

import math
for i in [1, 2, 4, 9, 10, 13]:
    print("%.2f"%(4*math.pi*i**2))
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NP97 班级管理

class Student:
    def __init__(self):
        self.name = input()
        self.Id = input()
        self.score =input()
        self.homework = input().split()
    def __str__(self):
            return (f"{self.name}'s student number is {self.Id}, and his grade is {self.score}. He submitted {len(self.homework)} assignments, each with a grade of {' '.join(self.homework)}")
stu = Student()  
print(stu)

        
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NP98 修改属性1

class Employee:
    def __init__(self,name,salary):
        self.n = name
        self.s = salary
    def printclass(self):
        try:
            print(f"{self.n}'salary is {self.s}, and his age is {self.age}")
        except:
            print("Error! No age")

e = Employee(input(),input())
e.printclass()
e.age = input()
e.printclass()
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NP99 修改属性2

class Employee:
    def __init__(self,name,salary):
        self.name = name
        self.salary = salary
    def printclass(self):
        try:
            print("{}'salary is {}, and his age is {}".format(self.name,self.salary,self.age))
        except:
            print(hasattr(e,'age'))
            
e = Employee(input(),input())
e.printclass()
e.age = input()
e.printclass()

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NP100 重载运算

class Coordinate:
    def __init__(self, x, y):
        self.x = x
        self.y = y 
        
    def str(self):
        print((self.x, self.y))
        
    def add(self):
        list1 = list(map(int,self.x.split()))
        list2 = list(map(int,self.y.split()))
        self.x = list1[0] + list2[0]
        self.y = list1[1] + list2[1]

x = input()
y = input()
c1 = Coordinate(x,y)
c1.add()
c1.str()
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12 正则表达式

NP101 正则查找网址

import re
print(re.match('https://www+',input()).span())
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NP102 提取数字电话

import re
print(re.sub('\D', '', input()))
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NP103 截断电话号码

import re
print(re.match("[0-9|-]+", input()).group() )
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