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 print("-"*50) print("*"*50) currentstr = input("PLease input a sentence, the program will cal the word num:") currentstr=currents…
str = "xxx" result = {} for i in set(str):#set将字符串转为集合对象,用于去重,减少计算量 result[i] = str.count(i) print result 使用python是真的方便,不仅有非常好用的高级方法,也没有c或c++,java的稍显繁琐的格式…
More is better Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 327680/102400 K (Java/Others)Total Submission(s): 21167 Accepted Submission(s): 7720 Problem Description Mr Wang wants some boys to help him with a project. Because the project…