5.10

周五

Python词频统计

 

一、目的

   掌握集合与字典的定义及其操作使用方法；

 

二、内容

  1. 输入一个整数列表L，判断L中是否存在相同的数字：

  （1）若存在，输出YES，否则输出NO；

   代码：

1 L=input('请输入一列整数，并以空格隔开：')
2 lis=L.split(' ')
3 if len(set(lis))!=len(lis):
4     print('YES')
5 else:
6     print('NO')

   运行结果：

     

  （2）若存在，输出YES，同时输出相同的数字；否则输出NO。

    代码：

 1 L=input('请输入一列整数，并以空格隔开：')
 2 lis=L.split(' ')
 3 if len(set(lis))!=len(lis):
 4     print('YES')
 5     for i in range(len(lis)-1):
 6         for j in range(i+1,len(lis)):
 7             if lis[i]==lis[j]:
 8                 print(lis[i])
 9 else:
10     print('NO')

       运行结果：

    

 2. 从英文字母（区分大小写）和 0~9数字组成的列表中随机生成10个6位数的密码。

  代码：

1 from random import sample
2 s=["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u",
3    "v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P",
4    "Q","R","S","T","U","V","W","X","Y","Z","0","1","2","3","4","5","6","7","8","9"]
5 for i in range(10):
6     answer = sample(s,6)
7     for j in answer:
8         print(j,end='')
9     print('\n')

   运行结果：