contestada

1. Create a program that determines and displays the number of unique characters in a string entered by a user. for example , Hello, World! has 10 unique characters while zzz has only 1 unique character. solve this problem

Respuesta :

jayilych4real

The given code that would determine and displays the number of unique characters in a string entered by a user.

def main():

   #We create a dict but leave it blank for now

   letterDict = {}

   text = input("Enter a text string: ")

   for c in text:

       #We don't want to count non alphabetic characters

       if c.isalpha():

           #We don't need to count how many times we have seen this item so just store any

           #value using the current character as a key

           letterDict[c] = 1

   #Now len(letterDict) will return the number of items in the dict and that is also

   #the number of unique characters

   print("The number of unique characters in that string = ", len(letterDict))

if __name__ == '__main__':

   main()

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