Python | Remove all duplicates words from a given sentence
Given a sentence containing n words/strings. Remove all duplicates words/strings which are similar to each others.
Examples:
Input : Geeks for Geeks Output : Geeks for Input : Python is great and Java is also great Output : is also Java Python and great
We can solve this problem quickly using python Counter() method. Approach is very simple.
1) Split input sentence separated by space into words.
2) So to get all those strings together first we will join each string in given list of strings.
3) Now create a dictionary using Counter method having strings as keys and their frequencies as values.
4) Join each words are unique to form single string.
Python
from collections import Counterdef remov_duplicates(input): # split input string separated by space input = input.split(" ") # joins two adjacent elements in iterable way for i in range(0, len(input)): input[i] = "".join(input[i]) # now create dictionary using counter method # which will have strings as key and their # frequencies as value UniqW = Counter(input) # joins two adjacent elements in iterable way s = " ".join(UniqW.keys()) print (s)# Driver programif __name__ == "__main__": input = 'Python is great and Java is also great' remov_duplicates(input) |
Output
and great Java Python is also
Alternative Method:-
Python
# Program without using any external librarys = "Python is great and Java is also great"l = s.split()k = []for i in l: # If condition is used to store unique string # in another list 'k' if (s.count(i)>=1 and (i not in k)): k.append(i)print(' '.join(k)) |
Output
Python is great and Java also
Method 3: Another shorter implementation:
Python3
# Python3 programstring = 'Python is great and Java is also great'print(' '.join(dict.fromkeys(string.split()))) |
Output
Python is great and Java also
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