Representation of Trie Node
Every Trie node consists of a character pointer array or hashmap and a flag to represent if the word is ending at that node or not. But if the words contain only lower-case letters (i.e. a-z), then we can define Trie Node with an array instead of a hashmap.
struct TrieNode {
struct TrieNode* children[ALPHABET_SIZE];
// This will keep track of number of strings that are
// stored in the Trie from root node to any Trie node.
int wordCount = 0;
};
public class TrieNode {
public TrieNode[] children;
public int wordCount;
public TrieNode()
{
children = new TrieNode[26];
// This will keep track of number of strings that
// are stored in the Trie from root node to any Trie
// node.
wordCount = 0;
}
}
# Python code
class TrieNode:
# Trie node class
def _init_(self):
self.children = [None for _ in range(26)]
# This will keep track of number of strings that are
# stored in the Trie from root node to any Trie node.
self.wordCount = 0
# This code is contributed by ishankhandelwals.
// Include namespace system
using System;
public class TrieNode
{
public TrieNode[] children;
public int wordCount;
public TrieNode()
{
this.children = new TrieNode[26];
// This will keep track of number of strings that
// are stored in the Trie from root node to any Trie
// node.
this.wordCount = 0;
}
}
// JS code
class TrieNode {
constructor()
{
this.children = new Array(26);
// This will keep track of number of strings that are
// stored in the Trie from root node to any Trie node.
this.wordCount = 0;
}
}
// This code is contributed by ishankhandelwals.
Trie Data Structure Tutorial
The trie data structure, also known as a prefix tree, is a tree-like data structure used for efficient retrieval of key-value pairs. It is commonly used for implementing dictionaries and autocomplete features, making it a fundamental component in many search algorithms. In this article, we will explore all about Trie data structures in detail.
Trie Data Structure
Table of Content
- What is Trie Data Structure?
- What is need of Trie Data Structure?
- Advantages of Trie Data Structure over a Hash Table
- Properties of a Trie Data Structure
- How does Trie Data Structure work?
- Representation of Trie Node
- Basic Operations on Trie Data Structure
- Insertion in Trie Data Structure
- Searching in Trie Data Structure
- Deletion in Trie Data Structure
- Implement Trie Data Structure?
- Complexity Analysis of Trie Data Structure
- Applications of Trie data structure
- Advantages of Trie data structure
- Disadvantages of Trie data structure
- Top Interview problems on Trie data structure