Python2018-字符串中字符个数统计

1 编写程序，完成以下要求：

  • 统计字符串中，各个字符的个数
  • 比如："hello world" 字符串统计的结果为： h:1 e:1 l:3 o:2 d:1 r:1 w:1
  •  1 print("-"*50)
 2 print("*"*50)
 3 currentstr = input("PLease input a sentence, the program will cal the word num:")
 4 
 5 currentstr=currentstr.replace(' ','')## Delete the 'Space' value
 6 newstr=''  #a new string to store the result
 7 for i in currentstr:
 8         if(currentstr.count(i)<=1):# if  there is only one word in currentstr
 9                 newstr=newstr+i
10                 newstr=newstr+':'
11                 newstr=newstr+str(1)+' '
12         else:#the word has 2 or more numbers
13                 if(newstr.count(i)<1): # has not register in the new string
14                         newstr= newstr+i
15                         newstr=newstr+':'
16                         newstr= newstr+str(currentstr.count(i))+' '
17 
18 print("-"*50)
19 print("The word number in this sentence is : %s"%newstr)
20 print("-"*50)
21

     

结果如下：

 

posted on 2018-02-01 23:08  克拉波隆方程  阅读(5213)  评论(0)  编辑  收藏  举报

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