Python – Find all duplicate characters in string
Given a string, find all the duplicate characters which are similar to each others.
Let’s look at the example.
Examples:
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Input : hello Output : l Input : geeksforgeeeks Output : e g k s
We have discussed a solution in below post.
Print all the duplicates in the input string
We can solve this problem quickly using python Counter() method. Approach is very simple.
1) First create a dictionary using Counter method having strings as keys and their frequencies as values.
2) Declare a temp variable.
3) Print all the indexes from the keys which have value greater than 1.
from collections import Counter def find_dup_char(input): # now create dictionary using counter method # which will have strings as key and their # frequencies as value WC = Counter(input) j = -1 # Finding no. of occurrence of a character # and get the index of it. for i in WC.values(): j = j + 1 if( i > 1 ): print WC.keys()[j], # Driver programif __name__ == "__main__": input = 'geeksforgeeks' find_dup_char(input) |
Output:
e g k s
