String matching with finite automata

Here given code implementation process.

// Java program for
// String matching with finite automata
public class Matching
{
	public int findNextState(String text, int m, int state, int x)
	{
		if (state < m && x == text.charAt(state))
		{
			return state + 1;
		}
		int i = 0;
		for (int p = state; p > 0; --p)
		{
			if (text.charAt(p - 1) == x)
			{
				while (i < p - 1 && 
                       text.charAt(i) == text.charAt(state - p + 1 + i))
				{
					i++;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
		}
		return 0;
	}
	public void construction(String text, int m, int[][] track)
	{
		for (int state = 0; state <= m; ++state)
		{
			// 256 indicate all possible characters
			for (int x = 0; x < 256; ++x)
			{
				track[state][x] = findNextState(text, m, state, x);
			}
		}
	}
	public void findPattern(String text, String pattern)
	{
		// Get the length of given text
		int m = text.length();
		// Get the length of given pattern
		int n = pattern.length();
		// m is a length of given text 
		// and 256 are indicate possible characters
		int[][] track = new int[m + 1][256];
		construction(text, m, track);
		int state = 0;
		for (int i = 0; i < n; i++)
		{
			state = track[state][pattern.charAt(i)];
			if (state == m)
			{
				System.out.println("Pattern found at index " + (i - m + 1));
			}
		}
	}
	public static void main(String[] args)
	{
		Matching task = new Matching();
		// Given text
		String text = "LXYZHEQXYZXYZQQHE11HXYZ1E";
		// Search pattern
		String pattern = "XYZ";
		// Find pattern which occurs in given text
		/*
		    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
		    Pattern = XYZ
		    --------------------------------
		    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
		        ---
		    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
		              ---
		    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                 ---
		    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                            ---
		*/
		task.findPattern(pattern, text);
	}
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
// Include header file
#include <iostream>
#include <string>

using namespace std;
// C++ program for
// String matching with finite automata
class Matching
{
	public: int findNextState(
      string text, 
      int m, 
      int state, 
      int x)
	{
		if (state < m && x == text[state])
		{
			return state + 1;
		}
		int i = 0;
		for (int p = state; p > 0; --p)
		{
			if (text[p - 1] == x)
			{
				while (i < p - 1 && 
                       text[i] == text[state - p + 1 + i])
				{
					i++;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
		}
		return 0;
	}
	void construction(string text, 
                      int m, 
                      int track[][256])
	{
		for (int state = 0; state <= m; ++state)
		{
			// 256 indicate all possible characters
			for (int x = 0; x < 256; ++x)
			{
				track[state][x] = 
                  this->findNextState(text, m, state, x);
			}
		}
	}
	void findPattern(string text, string pattern)
	{
		// Get the length of given text
		int m = text.length();
		// Get the length of given pattern
		int n = pattern.length();
		// m is a length of given text
		// and 256 are indicate possible characters
		int track[m + 1][256];
		this->construction(text, m, track);
		int state = 0;
		for (int i = 0; i < n; i++)
		{
			state = track[state][pattern[i]];
			if (state == m)
			{
				cout << "Pattern found at index " 
                     << (i - m + 1) << endl;
			}
		}
	}
};
int main()
{
	Matching *task = new Matching();
	// Given text
	string text = "LXYZHEQXYZXYZQQHE11HXYZ1E";
	// Search pattern
	string pattern = "XYZ";
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	task->findPattern(pattern, text);
	return 0;
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
// Include namespace system
using System;
// Csharp program for
// String matching with finite automata
public class Matching
{
	public int findNextState(String text, 
                             int m, 
							 int state, 
                             int x)
	{
		if (state < m && x == text[state])
		{
			return state + 1;
		}
		int i = 0;
		for (int p = state; p > 0; --p)
		{
			if (text[p - 1] == x)
			{
				while (i < p - 1 && 
                       text[i] == text[state - p + 1 + i])
				{
					i++;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
		}
		return 0;
	}
	public void construction(String text, 
                              int m, 
                              int[,] track)
	{
		for (int state = 0; state <= m; ++state)
		{
			// 256 indicate all possible characters
			for (int x = 0; x < 256; ++x)
			{
				track[state,x] = 
                  this.findNextState(text, m, state, x);
			}
		}
	}
	public void findPattern(String text, String pattern)
	{
		// Get the length of given text
		int m = text.Length;
		// Get the length of given pattern
		int n = pattern.Length;
		// m is a length of given text
		// and 256 are indicate possible characters
		int[,] track = new int[m + 1,256];
		this.construction(text, m, track);
		int state = 0;
		for (int i = 0; i < n; i++)
		{
			state = track[state,pattern[i]];
			if (state == m)
			{
				Console.WriteLine("Pattern found at index " + 
                                  (i - m + 1));
			}
		}
	}
	public static void Main(String[] args)
	{
		Matching task = new Matching();
		// Given text
		String text = "LXYZHEQXYZXYZQQHE11HXYZ1E";
		// Search pattern
		String pattern = "XYZ";
		// Find pattern which occurs in given text
		/*
		    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
		    Pattern = XYZ
		    --------------------------------
		    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
		        ---
		    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
		              ---
		    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                 ---
		    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                            ---
		*/
		task.findPattern(pattern, text);
	}
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
package main
import "fmt"
// Go program for
// String matching with finite automata
type Matching struct {}
func getMatching() * Matching {
	var me *Matching = &Matching {}
	return me
}
func(this Matching) findNextState(text string, 
	m int, 
	state int, 
	x int) int {
	if state < m && x == int(text[state]) {
		return state + 1
	}
	var i int = 0
	for p := state ; p > 0 ; p-- {
		if int(text[p - 1]) == x {
			for (i < p - 1 && text[i] == text[state - p + 1 + i]) {
				i++
			}
			if i == p - 1 {
				return p
			}
			i = 0
		}
	}
	return 0
}
func(this Matching) construction(text string, 
	m int, track[][] int) {
	for state := 0 ; state <= m ; state++ {
		// 256 indicate all possible characters
		for x := 0 ; x < 256 ; x++ {
			track[state][x] = this.findNextState(text, m, state, x)
		}
	}
}
func(this Matching) findPattern(text, pattern string) {
	// Get the length of given text
	var m int = len(text)
	// Get the length of given pattern
	var n int = len(pattern)
	// m is a length of given text
	// and 256 are indicate possible characters
	var track = make([][] int, m + 1)
	for i := 0;i < m + 1;i++{
		track[i] = make([] int, 256)
	}
	this.construction(text, m, track)
	var state int = 0
	for i := 0 ; i < n ; i++ {
		state = track[state][pattern[i]]
		if state == m {
			fmt.Println("Pattern found at index ", (i - m + 1))
		}
	}
}
func main() {
	var task * Matching = getMatching()
	// Given text
	var text string = "LXYZHEQXYZXYZQQHE11HXYZ1E"
	// Search pattern
	var pattern string = "XYZ"
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	task.findPattern(pattern, text)
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
<?php
// Php program for
// String matching with finite automata
class Matching
{
	public	function findNextState($text, $m, $state, $x)
	{
		if ($state < $m && $x == ord($text[$state]))
		{
			return $state + 1;
		}
		$i = 0;
		for ($p = $state; $p > 0; --$p)
		{
			if (ord($text[$p - 1]) == $x)
			{
				while ($i < $p - 1 && 
                       $text[$i] == $text[$state - $p + 1 + $i])
				{
					$i++;
				}
				if ($i == $p - 1)
				{
					return $p;
				}
				$i = 0;
			}
		}
		return 0;
	}
	public	function construction($text, $m, &$track)
	{
		for ($state = 0; $state <= $m; ++$state)
		{
			// 256 indicate all possible characters
			for ($x = 0; $x < 256; ++$x)
			{
				$track[$state][$x] = 
                  $this->findNextState($text, $m, $state, $x);
			}
		}
	}
	public	function findPattern($text, $pattern)
	{
		// Get the length of given text
		$m = strlen($text);
		// Get the length of given pattern
		$n = strlen($pattern);
		// m is a length of given text
		// and 256 are indicate possible characters
		$track = array_fill(0, $m + 1, array_fill(0, 256, 0));
		$this->construction($text, $m, $track);
		$state = 0;
		for ($i = 0; $i < $n; $i++)
		{
			$state = $track[$state][ord($pattern[$i])];
			if ($state == $m)
			{
				echo("Pattern found at index ".($i - $m + 1)."\n");
			}
		}
	}
}

function main()
{
	$task = new Matching();
	// Given text
	$text = "LXYZHEQXYZXYZQQHE11HXYZ1E";
	// Search pattern
	$pattern = "XYZ";
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	$task->findPattern($pattern, $text);
}
main();

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
// Node JS program for
// String matching with finite automata
class Matching
{
	findNextState(text, m, state, x)
	{
		if (state < m && x == text.charAt(state).charCodeAt(0))
		{
			return state + 1;
		}
		var i = 0;
		for (var p = state; p > 0; --p)
		{
			if (text.charAt(p - 1).charCodeAt(0) == x)
			{
				while (i < p - 1 && 
                       text.charAt(i) == text.charAt(state - p + 1 + i))
				{
					i++;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
		}
		return 0;
	}
	construction(text, m, track)
	{
		for (var state = 0; state <= m; ++state)
		{
			// 256 indicate all possible characters
			for (var x = 0; x < 256; ++x)
			{
				track[state][x] = 
                  this.findNextState(text, m, state, x);
			}
		}
	}
	findPattern(text, pattern)
	{
		// Get the length of given text
		var m = text.length;
		// Get the length of given pattern
		var n = pattern.length;
		// m is a length of given text
		// and 256 are indicate possible characters
		var track = Array(m + 1).fill(0).map(() => 
                                             new Array(256).fill(0));
		this.construction(text, m, track);
		var state = 0;
		for (var i = 0; i < n; i++)
		{
			state = track[state][pattern.charAt(i).charCodeAt(0)];
			if (state == m)
			{
				console.log("Pattern found at index " + 
                            (i - m + 1));
			}
		}
	}
}

function main()
{
	var task = new Matching();
	// Given text
	var text = "LXYZHEQXYZXYZQQHE11HXYZ1E";
	// Search pattern
	var pattern = "XYZ";
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	task.findPattern(pattern, text);
}
main();

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
#  Python 3 program for
#  String matching with finite automata
class Matching :
	def findNextState(self, text, m, state, x) :
		if (state < m and x == ord(text[state])) :
			return state + 1
		
		i = 0
		p = state
		while (p > 0) :
			if (ord(text[p - 1]) == x) :
				while (i < p - 1 and 
                       text[i] == text[state - p + 1 + i]) :
					i += 1
				
				if (i == p - 1) :
					return p
				
				i = 0
			
			p -= 1
		
		return 0
	
	def construction(self, text, m, track) :
		state = 0
		while (state <= m) :
			x = 0
			#  256 indicate all possible characters
			while (x < 256) :
				track[state][x] = self.findNextState(text, m, state, x)
				x += 1
			
			state += 1
		
	
	def findPattern(self, text, pattern) :
		#  Get the length of given text
		m = len(text)
		#  Get the length of given pattern
		n = len(pattern)
		#  m is a length of given text
		#  and 256 are indicate possible characters
		track = [[0] * (256) for _ in range(m + 1) ]
		self.construction(text, m, track)
		state = 0
		i = 0
		while (i < n) :
			state = track[state][ord(pattern[i])]
			if (state == m) :
				print("Pattern found at index ", (i - m + 1))
			
			i += 1
		
	

def main() :
	task = Matching()
	#  Given text
	text = "LXYZHEQXYZXYZQQHE11HXYZ1E"
	#  Search pattern
	pattern = "XYZ"
	#  Find pattern which occurs in given text
	#    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	#    Pattern = XYZ
	#    --------------------------------
	#    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	#        ---
	#    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#              ---
	#    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#                 ---
	#    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#                            ---
	task.findPattern(pattern, text)

if __name__ == "__main__": main()

Output

Pattern found at index  1
Pattern found at index  7
Pattern found at index  10
Pattern found at index  20
#  Ruby program for
#  String matching with finite automata
class Matching 
	def findNextState(text, m, state, x) 
		if (state < m && x == text[state].ord) 
			return state + 1
		end

		i = 0
		p = state
		while (p > 0) 
			if (text[p - 1].ord == x) 
				while (i < p - 1 && 
                       text[i] == text[state - p + 1 + i]) 
					i += 1
				end

				if (i == p - 1) 
					return p
				end

				i = 0
			end

			p -= 1
		end

		return 0
	end

	def construction(text, m, track) 
		state = 0
		while (state <= m) 
			x = 0
			#  256 indicate all possible characters
			while (x < 256) 
				track[state][x] = self.findNextState(text, m, state, x)
				x += 1
			end

			state += 1
		end

	end

	def findPattern(text, pattern) 
		#  Get the length of given text
		m = text.length
		#  Get the length of given pattern
		n = pattern.length
		#  m is a length of given text
		#  and 256 are indicate possible characters
		track = Array.new(m + 1) {Array.new(256) {0}}
		self.construction(text, m, track)
		state = 0
		i = 0
		while (i < n) 
			state = track[state][pattern[i].ord]
			if (state == m) 
				print("Pattern found at index ", 
                      (i - m + 1), "\n")
			end

			i += 1
		end

	end

end

def main() 
	task = Matching.new()
	#  Given text
	text = "LXYZHEQXYZXYZQQHE11HXYZ1E"
	#  Search pattern
	pattern = "XYZ"
	#  Find pattern which occurs in given text
	#    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	#    Pattern = XYZ
	#    --------------------------------
	#    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	#        ---
	#    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#              ---
	#    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#                 ---
	#    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	#                            ---
	task.findPattern(pattern, text)
end

main()

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
import scala.collection.mutable._;
// Scala program for
// String matching with finite automata
class Matching()
{
	def findNextState(text: String, 
                      m: Int, 
                      state: Int, 
                      x: Int): Int = {
		if (state < m && x == text.charAt(state).toInt)
		{
			return state + 1;
		}
		var i: Int = 0;
		var p: Int = state;
		while (p > 0)
		{
			if (text.charAt(p - 1).toInt == x)
			{
				while (i < p - 1 && 
                       text.charAt(i) == text.charAt(state - p + 1 + i))
				{
					i += 1;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
			p -= 1;
		}
		return 0;
	}
	def construction(text: String, 
                     m: Int, 
                     track: Array[Array[Int]]): Unit = {
		var state: Int = 0;
		while (state <= m)
		{
			var x: Int = 0;
			// 256 indicate all possible characters
			while (x < 256)
			{
				track(state)(x) = findNextState(text, m, state, x);
				x += 1;
			}
			state += 1;
		}
	}
	def findPattern(text: String, pattern: String): Unit = {
		// Get the length of given text
		var m: Int = text.length();
		// Get the length of given pattern
		var n: Int = pattern.length();
		// m is a length of given text
		// and 256 are indicate possible characters
		var track: Array[Array[Int]] = Array.fill[Int](m + 1, 256)(0);
		construction(text, m, track);
		var state: Int = 0;
		var i: Int = 0;
		while (i < n)
		{
			state = track(state)(pattern.charAt(i));
			if (state == m)
			{
				println("Pattern found at index " + (i - m + 1));
			}
			i += 1;
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: Matching = new Matching();
		// Given text
		var text: String = "LXYZHEQXYZXYZQQHE11HXYZ1E";
		// Search pattern
		var pattern: String = "XYZ";
		// Find pattern which occurs in given text
		/*
		    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
		    Pattern = XYZ
		    --------------------------------
		    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
		        ---
		    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
		              ---
		    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                 ---
		    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
		                            ---
		*/
		task.findPattern(pattern, text);
	}
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20
import Foundation;
// Swift 4 program for
// String matching with finite automata
class Matching
{
	func findNextState(_ text: [Character], 
                        _ m: Int, 
                        _ state: Int, 
                        _ x: Int) -> Int
	{
		if (state < m && 
            x == Int(UnicodeScalar(String(text[state]))!.value))
		{
			return state + 1;
		}
		var i: Int = 0;
		var p: Int = state;
		while (p > 0)
		{
			if (Int(UnicodeScalar(String(text[p - 1]))!.value) == x)
			{
				while (i < p - 1 && text[i] == text[state - p + 1 + i])
				{
					i += 1;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
			p -= 1;
		}
		return 0;
	}
	func construction(_ text: [Character], 
                      _ m: Int, 
                      _ track: inout[[Int]])
	{
		var state: Int = 0;
		while (state <= m)
		{
			var x: Int = 0;
			// 256 indicate all possible characters
			while (x < 256)
			{
				track[state][x] = self.findNextState(text, m, state, x);
				x += 1;
			}
			state += 1;
		}
	}
	func findPattern(_ t: String, _ p: String)
	{
      	let text = Array(t);
      	let pattern = Array(p);
		// Get the length of given text
		let m: Int = text.count;
		// Get the length of given pattern
		let n: Int = pattern.count;
      
      	
		// m is a length of given text
		// and 256 are indicate possible characters
		var track: [[Int]] = 
          Array(repeating: Array(repeating: 0, count: 256), 
          count: m + 1);
		self.construction(text, m, &track);
		var state: Int = 0;
		var i: Int = 0;
		while (i < n)
		{
			state = track[state][Int(
              UnicodeScalar(String(pattern[i]))!.value)];
			if (state == m)
			{
				print("Pattern found at index ", (i - m + 1));
			}
			i += 1;
		}
	}
}
func main()
{
	let task: Matching = Matching();
	// Given text
	let text: String = "LXYZHEQXYZXYZQQHE11HXYZ1E";
	// Search pattern
	let pattern: String = "XYZ";
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	task.findPattern(pattern, text);
}
main();

Output

Pattern found at index  1
Pattern found at index  7
Pattern found at index  10
Pattern found at index  20
// Kotlin program for
// String matching with finite automata
class Matching
{
	fun findNextState(text: String, 
                       m: Int, 
                       state: Int, 
                       x: Int): Int
	{
		if (state < m && x == text.get(state).toInt())
		{
			return state + 1;
		}
		var i: Int = 0;
		var p: Int = state;
		while (p > 0)
		{
			if (text.get(p - 1).toInt() == x)
			{
				while (i < p - 1 && 
                       text.get(i) == text.get(state - p + 1 + i))
				{
					i += 1;
				}
				if (i == p - 1)
				{
					return p;
				}
				i = 0;
			}
			p -= 1;
		}
		return 0;
	}
	fun construction(text: String, 
                     m: Int, 
                     track: Array < Array < Int >> ): Unit
	{
		var state: Int = 0;
		while (state <= m)
		{
			var x: Int = 0;
			// 256 indicate all possible characters
			while (x < 256)
			{
				track[state][x] = 
                  this.findNextState(text, m, state, x);
				x += 1;
			}
			state += 1;
		}
	}
	fun findPattern(text: String, pattern: String): Unit
	{
		// Get the length of given text
		val m: Int = text.length;
		// Get the length of given pattern
		val n: Int = pattern.length;
		// m is a length of given text
		// and 256 are indicate possible characters
		val track: Array < Array < Int >> = Array(m + 1)
		{
			Array(256)
			{
				0
			}
		};
		this.construction(text, m, track);
		var state: Int = 0;
		var i: Int = 0;
		while (i < n)
		{
			state = track[state][pattern.get(i).toInt()];
			if (state == m)
			{
				println("Pattern found at index " + (i - m + 1));
			}
			i += 1;
		}
	}
}
fun main(args: Array < String > ): Unit
{
	val task: Matching = Matching();
	// Given text
	val text: String = "LXYZHEQXYZXYZQQHE11HXYZ1E";
	// Search pattern
	val pattern: String = "XYZ";
	// Find pattern which occurs in given text
	/*
	    Text = LXYZHEQXYZXYZQQHE11HXYZ1E
	    Pattern = XYZ
	    --------------------------------
	    ➀  LXYZHEQXYZXYZQQHE11HXYZ1E
	        ---
	    ➁  LXYZHEQXYZXYZQQHE11HXYZ1E 
	              ---
	    ➂  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                 ---
	    ➃  LXYZHEQXYZXYZQQHE11HXYZ1E 
	                            ---
	*/
	task.findPattern(pattern, text);
}

Output

Pattern found at index 1
Pattern found at index 7
Pattern found at index 10
Pattern found at index 20


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