Python第二周习题集

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# 约瑟夫环问题

def main():
    """
    约瑟夫环问题,
    :return: 基督徒和非基督徒站的顺序。
    """
    persons = [True] * 30  # 30个人活着,用True表示。
    counter = 0  # 死的人。
    index = 0    # 下标
    number = 0   # 报数
    while counter < 15:  # 死的人小于15继续进行
        if persons[index]:  # 活着的人报数
            number += 1
            if number == 9:     # 报数为9的人被杀死
                persons[index] = False
                counter += 1    # 死的人加一
                number = 0  # 重新报数
        index += 1  # 下标一直增加,
        index %= 30  # 超过30开始循环,又回到0开始,
    for person in persons:  # 在这些人中,死了的标记为非,没死的标记为基
        print( if person else , end=‘‘)


if __name__ == __main__:
    main()
# list 的多重使用, 矩阵,棋盘。*****
def main():
    names = [关羽, 张飞, 赵云, 马超, 貂蝉]
    subjects = [语文, 数学, Python]
    table = [[0] * len(subjects) for _ in range(len(names))]  # 创建一个5行3列的矩阵。
    for row, name in enumerate(names):
        print(请输入%s的成绩: % name)
        for col, subject in enumerate(subjects):
            score = int(input(%s: % subject))   # 输入每个位置的值
            table[row][col] = score  # 将每个位置的值,填进去
    print(table)


if __name__ == __main__:
    main()

# 说年月日,判断是这一年的第几天

def is_leap_year(y):
    """
    判断是不是闰年,
    :param y: 输入年份
    :return: 闰年返回True, 否则返回False
    """
    if y % 4 == 0 and y % 100 != 0 or y % 400 == 0:
        return True
    return False


def which_day(year, month, date):
    """计算传入的日期是这一年的第几天"""
    days_of_month = [
        [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
    ][is_leap_year(year)]  # 调用上面的判断,True返回1, False返回0,以此来选择使用哪个列表。

    total = 0
    for index in range(month - 1):  # 对于输入月之前的每个月,计算天数
        total += days_of_month[index]
    return total + date   # 加上当月的天数,就是这一年的第几天了。


if __name__ == __main__:
    print(which_day(2018,3,8))

 # 杨辉三角

def triangles():
    a = [1]
    while True:
        yield a
        a = [sum(i) for i in zip([0]+a, a+[0])]



if __name__ == __main__:
    n = 0
    for t in triangles():
        print(t)
        n = n+1
        if n == 10:
            break

# 双色球选注

from random import randrange, randint
def display(balls):
    """
    美化输出球的页面
    :param balls: 输入的列表
    :return: 优化过的列表
    """
    for index, ball in enumerate(balls):
        if index == len(balls) - 1:
             print(|, end= )
        print(%02d % ball, end= )
    print()
def random_select():
    """
    6个红球的随机数(1-33)和1个蓝球的随机数(1-16)
    :return: 6个红球和一个蓝球的随机组合
    """
    red_balls = list(range(1, 34))
    select_balls = []
    for _ in range(6):
        index = randrange(len(red_balls))
        select_balls.append(red_balls[index])
        del red_balls[index]
    select_balls.sort()
    select_balls.append(randint(1, 16))
    return select_balls
def main():
    """
    注数,及返回值
    :return: 多少注的双色球随机数
    """
    n = int(input(机选几注:))
    for _ in range(n):
        display(random_select())
if __name__ == __main__:
    main()

# 时钟

from time import sleep
import time
from text import timerLocal

class Timer(object):

    def __init__(self, hour=0, minute=0, second=0):
        self.hour = hour
        self.minute = minute
        self.second = second

    def run(self):
        self.second += 1
        if self.second == 60:
            self.second = 0
            self.minute +=1
            if self.minute == 60:
                self.minute = 0
                self.hour += 1
                if self.hour == 24:
                    self.hour = 0

    def appear(self):
        return %02d:%02d:%02d % (self.hour, self.minute, self.second)


def clock():

    time1 = Timer()
    time1.hour = int(time.strftime(%H, time.localtime()))
    time1.minute = int(time.strftime(%M, time.localtime()))
    time1.second = int(time.strftime(%S, time.localtime()))
    while True:
        print(time1.appear())
        sleep(1)
        time1.run()


if __name__ == __main__:
    clock()

# 分钟倒计时器

from time import sleep
from time import time

class Clock(object):

    def __init__(self, hour, minute, second):
        self.hour = hour
        self.minute = minute
        self.second = second

    def run(self):
        self.second -= 1
        if self.second == 0:
            if self.minute > 0:
                self.minute -= 1
                self.second = 60
            elif self.minute == 0:
                print(时间到!)
                return False
        return True

    def appear(self):
        print(%02d:%02d:%02d % (self.hour, self.minute, self.second))

def main():
    clock = Clock(0, 0, 10)
    is_go_on = True

    while is_go_on:

        clock.appear()
        sleep(1)
        is_go_on = clock.run()


if __name__ == __main__:
    main()

# 猜拳

from random import randint, randrange


class Guess_number(object):

    def __init__(self, answer):
        self.answer = answer

    def compare(self, my_number):
        if my_number > self.answer:
            print(小一点!)
            return True
        if my_number < self.answer:
            print(大一点!)
            return True
        if my_number == self.answer:
            print(恭喜你猜对了!)
            return False


def main():
    answer = randrange(int(input(请输入你要猜的范围:)))
    is_go_on = True
    while is_go_on:
        me = Guess_number(answer)
        my_number = int(input(请输入你要猜的数:))
        is_go_on = me.compare(my_number)


if __name__ == __main__:
    main()

# # 描述平面上的一个点,方法:移动这个点,1.移动到某个地方,2.移动多少 3. 移动了多少距离。

from math import sqrt


class Point(object):

    def __init__(self, x=0, y=0):
        self._x = x
        self._y = y

    def move_by(self, dx, dy):
        self._x += dx
        self._y += dy
        return self._x, self._y

    def move_to(self, x, y):
        self._x = x
        self._y = y
        return self._x, self._y

    def distance_to(self, other):
        dx = self._x - other._x
        dy = self._x - other._y
        return sqrt(dx**2 + dy**2)


def main():
    point = Point()
    P1 = Point(5, 6)
    print(point.move_by(1, 1))
    print(point.move_to(2, 4))
    print(point.distance_to(P1))


if __name__ == __main__:
    main()

# 取本地时间

import time
from time import sleep

def timerLocal():
    while True:
        sleep(1)
        minute = time.strftime(%M, time.localtime())
        second = time.strftime(%S, time.localtime())
        hour = time.strftime(%H, time.localtime())

        print(%s:%s:%s %(hour, minute, second))

if __name__ == __main__:
    timerLocal()

 

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