首页分享编程练习题解析

编程练习题解析

来源：花匠小妙招时间：2024-12-07 16:52

一、第一题: '''编程实现迭代法求a的开平方根''' import math a = int(input("请输入任意实数a(>=0)：")) y = math.sqrt(a) x = a/2 while(abs(y-x) >= pow(10,-6)): x = 0.5*(x + a/x) print(str.format("{0}的算数平方根={1}",a,x)) 123456789

二、第二题: '''计算机Sn=1+11+111+1111+.....''' import random n = random.randint(1,10) x = 1 s = 0 for i in range(1,n+1): s += x x = 10*x+1 print("n = {0},Sn = {1}".format(n,s)) 12345678910

'''实现鸡兔同笼问题''' h = int(input("请输入总头数:")) f = int(input("请输入总脚数:")) def fun1(h,f): rabbits = f/2-h chicken = h-rabbits if(chicken < 0 or rabbits < 0): return '无解' return chicken,rabbits def fun2(h,f): for i in range(0,h+1): if(2*i + 4*(h-i) == f): return i,h-i return '无解' if(h>0 and f>0 and f % 2 == 0): if fun1(h,f)=='无解': print("无解") else: print("方法一:鸡:{0}只，兔:{1}只".format(fun1(h,f)[0],fun1(h,f)[1])) print("方法二:鸡:{0}只，兔:{1}只".format(fun2(h,f)[0],fun2(h,f)[1])) else: print('输入错误,请重新输入!')

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#文件读取方式实现猜单词游戏: import random import sys f=open("F:/python/python.txt",'r',encoding='UTF-8') WORDS=list() while True: line=f.readline().replace('n','') #读取一行，进行去掉后面的换行符 if line: WORDS.append(line) else: break f.close() right = 'Y' print("欢迎参加猜单词游戏！") while right=='Y' or right=='y': word=random.choice(WORDS) correct=word newword = '' while word: pos=random.randrange(len(word)) newword+=word[pos] word = word[:pos]+word[(pos+1):] print("你要猜测的单词为：",newword) guess = input("请输入你的答案：") count=1 while count<5: if guess!=correct: guess = input("输入的单词错误，请重新输入：") count+=1 else : print("输入的单词正确，正确单词为：",correct) break if count == 5: print("您已猜错5次，正确的单词为：",correct) right = input("是否继续，Y/N：")

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F:/python/python.txt内容: math english china history python 123456

运行结果:
在这里插入图片描述