A trie isn’t something CS students might have spent that much time on in college but it’s really very important for interviews. A trie is a data structure that is actually a type of tree, but it’s often used to store an associative array or a dynamic set where the keys are usually characters or strings, and its position in the tree defines the key with which it is associated. The way that it works is that every successor of a node have a common prefix of the string associated with that node which means each node might store a, just a character as its data but then if we look at the path from the root down to that node, that note is really representing a word or a part of a word, and so what allows us to do is, very quick lookups of a particular kind of word or character.
- Importing required module:
- Now, we will make a class TrieHash in which we will implement a HashMap, it will also contain two constructors with zero and single array argument, a function to add characters to hash trie and a function to search for the specific string in the hash trie.
Now all the required functions are coded, now we will test those functions with the user input. For this, we will again make a new class to test our hash trie which will prompt the user to enter the words for trie and the word to be searched for.
Below is the implementation of the problem statement:
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