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Display trie tree elements

Here given code implementation process.

/*
Java program
Trie Display Elements
*/
#include <iostream>

#include <string.h>

#define ALPHABETS 26

using namespace std;
class Node {
  public:
  bool end;
  Node *children[ALPHABETS];
  Node() {
    this->end = false;
    for (int i = 0; i < ALPHABETS; ++i) {
      this->children[i] = NULL;
    }
  }
};
class Trie {
  public:
    Node *root;
  Trie() {
    this->root = new Node();
  }
  void insert(string text) {
    int length = text.size();
    int index = 0;
    Node *head = this->root;
    int level = 0;
    while (level < length) {
      index = text[level] - 'a';
      if (head->children[index] == NULL) {
        head->children[index] = new Node();
      }
      head = head->children[index];
      level++;
    }
    if (head != NULL) {
      head->end = true;
    }
  }
  void display(Node *head, string about) {
    if (head != NULL) {
      if (head->end == true) {
        cout << about<<endl;
      }
      for (int i = 0; i < ALPHABETS; i++) {
        if (head->children[i] != NULL) {
          this->display(head->children[i], about + ((char)(i + 97)));
        }
      }
    }
  }
};
int main() {
  
  Trie obj;
  /*
    root
   /  \  \
  c    d  r 
  |    |  |
  o    o  u
  | \  |  |
  d  w g  n
  |  
  e  
  
  */
 
  obj.insert("run");
  obj.insert("code");
  obj.insert("dog");
  obj.insert("cow");
  obj.display(obj.root, "");
  return 0;
}

Output

code
cow
dog
run

/*
  Java program
  Trie Display Elements
*/
class Node {
  //Indicates end of string
  public boolean end;

  public Node[] children;

  public Node(int size) {
    end = false;
    children = new Node[size];
  }
}
public class Trie {
  
  public int ALPHABETS = 26;


  public Node root;

  public Trie() {
    root = new Node(ALPHABETS);
  }

  public void insert(String text) {
    //First get the length of text
    int length = text.length();

    //This variable are used to task find the index location of character
    int index = 0;

    //Get the root node
    Node head = root;

    for (int level = 0; level < length; level++) {
      //Get the index
      index = text.charAt(level) - 'a';

      if (head.children[index] == null) {
        //When need to add new Node
        head.children[index] = new Node(ALPHABETS);
      }

      head = head.children[index];
    }
    if (head != null) {
      //Indicates end of string
      head.end = true;
    }
  }
  public void display(Node head, String about) {

    if (head != null) {

      if (head.end == true) {
        System.out.println(about);
      }

      for (int i = 0; i < ALPHABETS; i++) {
        if (head.children[i] != null) {
          display(head.children[i], about + ((char)(i + 97)));
        }
      }
    }
  }

  public static void main(String[] args) {
    //Make object
    Trie obj = new Trie();
    /*
      root
     /  \  \
    c    d  r 
    |    |  |
    o    o  u
    | \  |  |
    d  w g  n
    |  
    e  
    
    */
    obj.insert("run");
    obj.insert("code");
    obj.insert("dog");
    obj.insert("cow");
    obj.display(obj.root, "");
  }
}

Output

code
cow
dog
run

# Python 3 Program
# Trie Display Elements
class Node :

  def __init__(self, size) :
    self.end = False
    self.children = [None]*size
  

class Trie :

  def __init__(self) :
    self.ALPHABETS = 26
    self.root = Node(self.ALPHABETS)
  
  def insert(self, text) :
    length = len(text)
    index = 0
    head = self.root
    level = 0
    while (level < length) :
      index = ord(text[level]) - ord('a')
      if (head.children[index] == None) :
        head.children[index] = Node(self.ALPHABETS)
      
      head = head.children[index]
      level += 1
    
    if (head != None) :
      head.end = True
    
  
  def display(self, head, about) :
    if (head != None) :
      if (head.end == True) :
        print(about)
      
      i = 0
      while (i < self.ALPHABETS) :
        if (head.children[i] != None) :
          self.display(head.children[i], about + (chr(i + 97)))
        
        i += 1
      
    
  
def main() :
  obj = Trie()
  
  #      root
  #     /  \  \
  #    c    d  r
  #    |    |  |
  #    o    o  u
  #    | \  |  |
  #    d  w g  n
  #    |
  #    e  

  obj.insert("run")
  obj.insert("code")
  obj.insert("dog")
  obj.insert("cow")
  obj.display(obj.root, "")
  

if __name__ == "__main__":
  main()

Output

code
cow
dog
run

/*
C# program
Trie Display Elements
*/
using System;
public class Node {
	//Indicates end of string
	public Boolean end;

	public Node[] children;

	public Node(int size) {
		end = false;
		children = new Node[size];
	}
}
public class Trie 
{ 
	public int ALPHABETS = 26;

	public Node root;

	public Trie() {
		root = new Node(ALPHABETS);
	}

	public void insert(String text) {
		//first get the.Length of text
		int size = text.Length;

		//This variable are used to task find the index location of character
		int index = 0;

		//get the root node
		Node head = root;

		for (int level = 0; level < size; level++) {
			//Get the index
			index = text[level] - 'a';

			if (head.children[index] == null) {
				//When need to add new Node
				head.children[index] = new Node(ALPHABETS);
			}

			head = head.children[index];
		}
		if (head != null) {
			//indicates end of string
			head.end = true;
		}
	}
	public void display(Node root, String about) {

		if (root != null) {

			if (root.end == true) {
				Console.WriteLine(about);
			}

			for (int i = 0; i < ALPHABETS; i++) {
				if (root.children[i] != null) {
					display(root.children[i], about + ((char)(i + 97)));
				}
			}
		}
	}


	public static void Main(String[] args) 
	{
		//Make object
		Trie obj = new Trie();
		/*
      root
     /  \  \
    c    d  r 
    |    |  |
    o    o  u
    | \  |  |
    d  w g  n
    |  
    e  
    
    */
		obj.insert("run");
		obj.insert("code");
		obj.insert("dog");
		obj.insert("cow");
		obj.display(obj.root, "");
	}
}

Output

code
cow
dog
run

# Ruby program
# Trie Display Elements

class Node
	attr_reader :end, :children
	attr_accessor :end, :children
	def initialize(size) 
		@end = false
		@children = Array.new(size){nil}
	end
end

class Trie
	attr_reader :ALPHABETS, :root
	attr_accessor :ALPHABETS, :root
	def initialize() 
		@ALPHABETS = 26
		@root = Node.new(@ALPHABETS)
	end
	def insert(text) 
		size = text.length
		location = 0
		head = @root
		level = 0
		while (level < size) 
			location = text[level].ord - 'a'.ord
			if (head.children[location] == nil) 
				head.children[location] = Node.new(@ALPHABETS)
			end
			head = head.children[location]
			level += 1
		end
		if (head != nil) 
			head.end = true
		end
	end
	def display(head, about) 
		if (head != nil) 
			if (head.end == true) 
				print(about,"\n")
			end
			i = 0
			while (i < @ALPHABETS) 
				if (head.children[i] != nil) 
					self.display(head.children[i], about + ((i + 97).chr))
				end
				i += 1
			end
		end
	end
end

def main() 
	obj = Trie.new()

	#      root
	#     /  \  \
	#    c    d  r
	#    |    |  |
	#    o    o  u
	#    | \  |  |
	#    d  w g  n
	#    |
	#    e  

	obj.insert("run")
	obj.insert("code")
	obj.insert("dog")
	obj.insert("cow")
	obj.display(obj.root, "")
end
main()

Output

code
cow
dog
run

<?php
/*
Php Program
Trie Display Elements
*/
class Node {
  public $end;
  public $children = [];

  function __construct($size) {
    $this->end = false;
    $this->children = array_fill(0, $size, null);
  }
}
class Trie {
  private $ALPHABETS;
  public $root;

  function __construct() {
    $this->ALPHABETS = 26;
    $this->root = new Node($this->ALPHABETS);
  }

  public  function insert($text) {
    $size = strlen($text);
    $index = 0;
    $head = $this->root;
    $level = 0;
    while ($level < $size) {
      $index =  ord($text[$level]) - ord('a');
      if ($head->children[$index] == null) {
        $head->children[$index] = new Node($this->ALPHABETS);
      }
      $head = $head->children[$index];
      $level++;
    }
    if ($head != null) {
      $head->end = true;
    }
  }
  public  function display($head, $about) {
    if ($head != null) {
      if ($head->end == true) {
        echo $about."\n";
      }
      $i = 0;
      while ($i < $this->ALPHABETS) {
        if ($head->children[$i] != null) {
          $this->display($head->children[$i], $about . (chr($i + 97)));
        }
        $i++;
      }
    }
  }
}

function main() {
 
  $obj = new Trie();
  /*
      root
     /  \  \
    c    d  r 
    |    |  |
    o    o  u
    | \  |  |
    d  w g  n
    |  
    e  
    
  */

  $obj->insert("run");
  $obj->insert("code");
  $obj->insert("dog");
  $obj->insert("cow");
  $obj->display($obj->root, "");
}
main();

Output

code
cow
dog
run

/*
  Node Js Program
  Trie Display Elements
*/
class Node {
	
	constructor(size) {
		this.end = false;
		this.children = new Array(size).fill(null);
	}
}
class Trie {
	
	constructor() {
		this.ALPHABETS = 26;
		this.root = new Node(this.ALPHABETS);
	}
	insert(text) {
		var size = text.length;
		var index = 0;
		var head = this.root;
		var level = 0;
		while (level < size) {
			index = text.charCodeAt(level) - 'a'.charCodeAt(0);
			if (head.children[index] == null) {
				head.children[index] = new Node(this.ALPHABETS);
			}
			head = head.children[index];
			level++;
		}
		if (head != null) {
			head.end = true;
		}
	}
	display(head, about) {
		if (head != null) {
			if (head.end == true) {
				console.log(about);
			}
			var i = 0;
			while (i < this.ALPHABETS) {
				if (head.children[i] != null) {
					this.display(head.children[i], about + (String.fromCharCode(i + 97)));
				}
				i++;
			}
		}
	}



}
function main() {
	var obj = new Trie();
    /*
      root
     /  \  \
    c    d  r 
    |    |  |
    o    o  u
    | \  |  |
    d  w g  n
    |  
    e  
    
    */
    obj.insert("run");
    obj.insert("code");
    obj.insert("dog");
    obj.insert("cow");
    obj.display(obj.root, "");
}
main();

Output

code
cow
dog
run
Last updated on by Kalkicode




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