Python 求解-黑洞

题目

求解字符串数字组合

import itertools

s = input()
n = int(input())

numStr = ''.join(sorted(set(filter(str.isdigit, s)), reverse = True))

for s in itertools.combinations(numStr, n):
    print(''.join(list(s)))

求解字符串函数组合

from itertools import combinations
a=input()
b=[]
e=[]
c=set()
d=""
t=0
for i in a:
    if i.isdigit():
        b.append(eval(i))

for i in b:
    c.add(i)
n=eval(input())
if n<=len(c):
   for i in combinations(c,n):
        i=list(i)
        i.sort(reverse=True)
        while t<len(i):
           d+=str(i[t])
           t+=1
        e.append(eval(d))
        t=0
        d=""
e.sort(reverse=True)
for i in e:

    print(i)

黑洞

def isHd(n):
    num_str= str(n)
    max = ''
    min = ''
    for i in sorted(num_str,reverse = yes):
        max += str(i)
    for i in sorted(num_str):
        min += str(i)
    if int(max) - int(min) == n:
        return yes
    else:
        return no

统计单词数-应用

words = ""
while True:
    a = input()
    if a == "%%%":
        break
    a = a.lower()
    for i in "!.,:*?#012345689":
        a = a.replace(i, ' ')
    words = words + " " + a
words = words.split()
s = {}
for i in words:
    if i in s:
        s[i] += 1
    else:
        s[i] = 1
s = list(s.items())
s.sort(key = lambda x:x[0])
s.sort(key = lambda x:x[1], reverse = True)
print(len(s))
for i in range(6):
    word,count = s[i]
    print("{}={}".format(word, count))

集合应用2

a = set(input().split())
b = set(input().split())
c = set(input().split())
d = set(input().split())
t1 = (a | b | c | d)
print("Total: {0}, num: {1}".format(sorted(t1), len(t1)))
t2 = (a | b) & c & d
print("Math and jsj: {0}, num: {1}".format(sorted(t2), len(t2)))
t3 = (c | d) & set([chr(x) for x in range(97, 123)])
print("FeMale in race: {0}, num: {1}".format(sorted(t3), len(t3)))
t4 = ((a | b) & c) - d
print("Only Math: {0}".format(sorted(t4)))

学生类

import sys

class Student:
    def __init__(self, name, sex, score):
        self.name = name
        self.sex = sex
        self.score = score

    def getName(self):
        return self.name

    def getSex(self):
        return self.sex

    def getScore(self):
        return self.score

students = []
def makestudent(studentstring):
    for i in studentstring:
        a, b, c = i.split(',')
        students.append(Student(a, b, int(c)))

L = sys.stdin.readlines()
makestudent(L)

maxScore = -1
for i in students:
    if i.getScore() > maxScore:
        maxName = i.getName()
        maxSex = i.getSex()
        maxScore = i.getScore()
print("the highest score: {0} {1} {2:.1f}".format(maxName, maxSex, maxScore))
print("no pass: ")
for i in students:
    if i.getScore() < 60:
        print(i.getName())

计算统计值类 (15分)
在python中statistics模块实现常用的统计公式，允许使用python的各种数值类型（int,float，Decimal和Fraction)来完成高效计算。 本题为了加强同学们对列表、类设计，不采用直接调用statistics模块相应方法来完成输入一组数据的基本统计值统计值。 要求：定义一个类计算统计值类CalStatisticsValue，类中方法有：构造方法（用来初始化成员变量）、计算平均值CauMean、计算标准差CauDev、计算中位数CauMedian；成员变量有：Datas（列表类型，用来存储数据）、Mean（平均值）、Dev（标准差）、Median（中位数）。

class CalStatisticsValue:
def _init_(self):
self.Datas = Data
def GetData(self):
d = input()
self.Datas = list(eval(d))
def CauMean(self):
s = 0.0
for num in self.Datas:
s += num
return s / len(self.Datas)
def CauDev(self):
sdev = 0.0
for num in self.Datas:
sdev = sdev + (num - self.CauMean()) ** 2
return pow(sdev / (len(self.Datas) - 1), 0.5)
def CauMedian(self):
ls = sorted(self.Datas)
size = len(ls)
if size % 2 == 0:
med = (ls[size // 2 - 1] + ls[size // 2]) / 2
else:
med = ls[size // 2]
return med
求圆面积
import math
radius = float(input())
print("{0:.2f}".format(radius ** 2 * math.pi))
身份证校验_python (10分)
中国居民身份证校验码算法如下：
将身份证号码前面的17位数分别乘以不同的系数。从第一位到第十七位的系数分别为：7－9－10－5－8－4－2－1－6－3－7－9－10－5－8－4－2。 将这17位数字和系数相乘的结果相加。
a = list(input().split())
coefficient = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
lastNum = ['1', '0', 'x', '9', '8', '7', '6', '5', '4', '3', '2']
sum = 0
for i in range(0,17):
sum += int(a[i]) * coefficient[i]
sum %= 11
print(lastNum[sum])
学生成绩统计
class CourseScore:
def __init__(self, Name):
self.Name = Name
self.Scorelist = []
def InputScore(self):
Sc = input().split(',')
self.Scorelist = list(map(int, Sc))
def GetStatistics(self):
grade = ['满分', '优秀', '良好', '中等', '及格', '不及格']
sclist = [0] * 6
for sc in self.Scorelist:
if sc < 60:
sclist[5] += 1
else:
sclist[10 - sc // 10] += 1
return dict(zip(grade, sclist))
def GetAverage(self):
s = 0.0
for num in self.Scorelist:
s = s + float(num)
return s / len(self.Scorelist)
def Show(self):
print("课程:{0}".format(self.Name))
print("共有{0}人参加考试".format(len(self.Scorelist)))
print("最高分:{0},最低高分:{1}".format(max(self.Scorelist), min(self.Scorelist)))
print("平均分:{:.2f}".format(self.GetAverage()))
print(self.GetStatistics())
身份证号判断性别与出生日期
import time
def isVaildDate(date):
try:
time.strptime(date, "%Y%m%d")
return True
except:
return False
Id = input()
if len(Id) == 18:
Date = Id[6:14]
xb = Id[-2]
elif len(Id) == 15:
Date = '19' + Id[6:12]
xb = Id[-1]
if not isVaildDate(Date):
print("Error,日期不合法")
else:
if eval(xb) % 2 == 0:
print('女', end = ',')
else:
print('男', end = ',')
print(Date[:4] + '年' + Date[4:6] + '月' + Date[6:] + '日')

本文地址：https://blog.csdn.net/mju_Hy/article/details/111938405