练习1
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import math,random
n=int(input('请输入随机数的个数：'))
m=int(input('请输入随机数下界：'))
k=int(input('请输入随机数上界：'))
sum=0
i=0
while i<n:
i+=1
num=random.randint(m,k)
sum+=num
print(math.sqrt(sum/n))
练习2
In [2]:
import math,random
n=int(input('请输入随机数的个数：'))
m=int(input('请输入随机数下界：'))
k=int(input('请输入随机数上界：'))
sum_1=0
sum_2=0
i=0
while i<n:
i+=1
num=random.randint(m,k)
sum_1+=math.log(num)
sum_2+=1/math.log(num)
print('西格玛log(随机整数):',sum_1)
print('西格玛1/log(随机整数):',sum_2)
练习3
In [3]:
import random
sum=0
i=0
n=int(input('请输入相加数的个数：'))
a=random.randint(1,9)
print('选取的随机数是：',a)
b=a
while i<n:
i+=1
sum+=b
b+=a*10**i
print('s=a+aa+aaa+aaaa+aa...a:',sum)
挑战性练习
In [4]:
import random, math
def win():
print('I Win!')
def lose():
print('Sorry,I Lose...')
def game_over():
print('Game over! Bye~')
def show_team():
print('201611680433----Peggy Yang')
def show_instruction():
print('用户随便选择一个整数，计算机猜测')
def menu():
print('''
=====游戏菜单=====
1. 游戏说明
2. 开始游戏
3. 退出游戏
4. 制作团队
=====游戏菜单=====''')
def guess_game():
n=int(input('请输入一个大于0的整数，作为神秘整数的上界，回车结束。'))
min=1
max=n
max_times=math.ceil(math.log(n, 2))
guess_times=0
guess=random.randint(1,n)
while guess_times<max_times:
guess_times+=1
print('一共可以猜',max_times,'次')
print('已经猜了',guess_times,'次')
print('是数字',guess,'吗？')
judge=int(input('是，请输入0；偏大，请输入1；偏小，请输入-1：'))
if judge==1:
max=guess
guess=random.randint(min,max)
continue
elif judge==-1:
min=guess
guess=random.randint(min,max)
continue
else:
win()
print('神秘数字是：', guess)
print('比标准次数少', max_times-guess_times, '次')
break
else:
num=int(input('神秘数字是：'))
lose()
def main():
while True:
menu()
choice = int(input('请输入你的选择'))
if choice == 1:
show_instruction()
elif choice == 2:
guess_game()
elif choice == 3:
game_over()
break
else:
show_team()
if __name__ == '__main__':
main()
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