Skip to content
Related Articles

Related Articles

Possible Words using given characters in Python
  • Difficulty Level : Easy
  • Last Updated : 13 Jun, 2019

Given a dictionary and a character array, print all valid words that are possible using characters from the array.
Note: Repetitions of characters is not allowed.

Input : Dict = ["go","bat","me","eat","goal","boy", "run"]
        arr = ['e','o','b', 'a','m','g', 'l']
Output : go, me, goal. 

This problem has existing solution please refer Print all valid words that are possible using Characters of Array link. We will this problem in python very quickly using Dictionary Data Structure. Approach is very simple :

  1. Traverse list of given strings one by one and convert them into dictionary using Counter(input) method of collections module.
  2. Check if all keys of any string lies within given set of characters that means this word is possible to create.

# Function to print words which can be created
# using given set of characters
def charCount(word):
    dict = {}
    for i in word:
        dict[i] = dict.get(i, 0) + 1
    return dict
def possible_words(lwords, charSet):
    for word in lwords:
        flag = 1
        chars = charCount(word)
        for key in chars:
            if key not in charSet:
                flag = 0
                if charSet.count(key) != chars[key]:
                    flag = 0
        if flag == 1:
if __name__ == "__main__":
    input = ['goo', 'bat', 'me', 'eat', 'goal', 'boy', 'run']
    charSet = ['e', 'o', 'b', 'a', 'm', 'g', 'l']
    possible_words(input, charSet)



 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up
Recommended Articles
Page :