A Trie is used to store dictionary words so that they can be searched efficiently and prefix search can be done. The task is to write a function to count the number of words.
Input : root / \ \ t a b | | | h n y | | \ | e s y e / | | i r w | | | r e e | r Output : 8 Explanation : Words formed in the Trie : "the", "a", "there", "answer", "any", "by", "bye", "their".
In Trie structure, we have a field to store end of word marker, we call it isLeaf in below implementation. To count words, we need to simply traverse the Trie and count all nodes where isLeaf is set.
This article is contributed by Rohit Thapliyal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
- Sorting array of strings (or words) using Trie
- Check if the given Trie contains words starting from every alphabet
- Sorting array of strings (or words) using Trie | Set-2 (Handling Duplicates)
- Check if the given string of words can be formed from words present in the dictionary
- Boggle | Set 2 (Using Trie)
- Trie | (Delete)
- Search in a trie Recursively
- Persistent Trie | Set 1 (Introduction)
- Trie | (Insert and Search)
- Implement a Dictionary using Trie
- Insertion in a Trie recursively
- Bottom-up traversal of a Trie
- Trie | (Display Content)
- Program for assigning usernames using Trie
- Auto-complete feature using Trie
Improved By : princiraj1992