Count of substrings of length K with exactly K distinct characters

Here given code implementation process.

// Java Program 
// Count of substrings of length K with exactly K distinct characters
import java.util.HashMap;
public class Palindrome
{
	// Count all distinct k character of k length
	public void countDistinctK(String text, int k)
	{
		int count = 0;
		// Display calculated result
		System.out.print(" Given Text : " + text);
		System.out.print("\n K : " + k);
		if (k < text.length())
		{
			// Define loop controlling variable i
			int i = 0;
			// Use to count character frequency
			HashMap < Character, Integer > record = new HashMap < Character, Integer > ();
			// Find the initials K character frequency
			for (i = 0; i < k; i++)
			{
				if (record.containsKey(text.charAt(i)))
				{
					// increase character frequency
					record.put(text.charAt(i), record.get(text.charAt(i)) + 1);
				}
				else
				{
					// add new character
					record.put(text.charAt(i), 1);
				}
			}
			if (record.size() == k)
			{
				System.out.print("\n(" + text.substring(0, k) + ")");
				// Initials character are distinct
				count = 1;
			}
			for (i = k; i < text.length(); i++)
			{
				if (record.containsKey(text.charAt(i)))
				{
					// increase character frequency
					record.put(text.charAt(i), record.get(text.charAt(i)) + 1);
				}
				else
				{
					// add new character
					record.put(text.charAt(i), 1);
				}
				if (record.get(text.charAt(i - k)) > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record.put(text.charAt(i - k), record.get(text.charAt(i - k)) - 1);
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.remove(text.charAt(i - k));
				}
				if (record.size() == k)
				{
					System.out.print("\n(" + text.substring(i - k + 1, i + 1) + ")");
					// When record size equal to k
					// increase resultant counter
					count++;
				}
			}
		}
		System.out.print("\n Result : " + count);
	}
	public static void main(String[] args)
	{
		Palindrome task = new Palindrome();
		String text = "KFGTFTITCSGRROUPT";
		int k = 4;
		// KFGTFTITCSGRROUP
		// All K characters resultant pair is
		// ((KFGT)
		// (ITCS)
		// (TCSG)
		// (CSGR)
		// (ROUP)
		// (OUPT)
		task.countDistinctK(text, k);
	}
}

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
// Include header file
#include <iostream>
#include <string>
#include <unordered_map>

using namespace std;

// C++ Program
// Count of substrings of length K with exactly K distinct characters

class Palindrome
{
	public:
		// Count all distinct k character of k length
		void countDistinctK(string text, int k)
		{
			int count = 0;
			// Display calculated result
			cout << " Given Text : " << text;
			cout << "\n K : " << k;
			if (k < text.length())
			{
				// Define loop controlling variable i
				int i = 0;
				// Use to count character frequency
				unordered_map < char, int > record ;
				// Find the initials K character frequency
				for (i = 0; i < k; i++)
				{
					if (record.find(text[i]) != record.end())
					{
						// increase character frequency
						record[text[i]] = record[text[i]] + 1;
					}
					else
					{
						// add new character
						record[text[i]] = 1;
					}
				}
				if (record.size() == k)
				{
					cout << "\n(" << text.substr(0, k) << ")";
					// Initials character are distinct
					count = 1;
				}
				for (i = k; i < text.length(); i++)
				{
					if (record.find(text[i]) != record.end())
					{
						// increase character frequency
						record[text[i]] = record[text[i]] + 1;
					}
					else
					{
						// add new character
						record[text[i]] = 1;
					}
					if (record[text[i - k]] > 1)
					{
						// Reduce the (i - k) - th character frequency
						// Reduce character frequency
						record[text[i - k]] = record[text[i - k]] - 1;
					}
					else
					{
						// When (i - k) - th character frequency is one then remove
						record.erase(text[i - k]);
					}
					if (record.size() == k)
					{
						// When record size equal to k
						// increase resultant counter
						cout << "\n(" << text.substr(i - k + 1, k) << ")";
						count++;
					}
				}
			}
			cout << "\n Result : " << count;
		}
};
int main()
{
	Palindrome task = Palindrome();
	string text = "KFGTFTITCSGRROUPT";
	int k = 4;
	// KFGTFTITCSGRROUP
	// All K characters resultant pair is
	// ((KFGT)
	// (ITCS)
	// (TCSG)
	// (CSGR)
	// (ROUP)
	// (OUPT)
	task.countDistinctK(text, k);
	return 0;
}

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
// Include namespace system
using System;
using System.Collections.Generic;
// C# Program
// Count of substrings of length K with exactly K distinct characters
public class Palindrome
{
	// Count all distinct k character of k length
	public void countDistinctK(String text, int k)
	{
		int count = 0;
		// Display calculated result
		Console.Write(" Given Text : " + text);
		Console.Write("\n K : " + k);
		if (k < text.Length)
		{
			// Define loop controlling variable i
			int i = 0;
			// Use to count character frequency
			Dictionary < char, int > record = new Dictionary < char, int > ();
			// Find the initials K character frequency
			for (i = 0; i < k; i++)
			{
				if (record.ContainsKey(text[i]))
				{
					// increase character frequency
					record.Add(text[i], record[text[i]] + 1);
				}
				else
				{
					// add new character
					record.Add(text[i], 1);
				}
			}
			if (record.Count == k)
			{
				Console.Write("\n(" + text.Substring(0, k) + ")");
				// Initials character are distinct
				count = 1;
			}
			for (i = k; i < text.Length; i++)
			{
				if (record.ContainsKey(text[i]))
				{
					// increase character frequency
					record[text[i]] = record[text[i]] + 1;
				}
				else
				{
					// add new character
					record.Add(text[i], 1);
				}
				if (record[text[i - k]] > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record[text[i - k]] =  record[text[i - k]] - 1;
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.Remove(text[i - k]);
				}
				if (record.Count == k)
				{
					// When record size equal to k
					// increase resultant counter
					Console.Write("\n(" + text.Substring(i - k + 1, k) + ")");
					count++;
				}
			}
		}
		Console.Write("\n Result : " + count);
	}
	public static void Main(String[] args)
	{
		Palindrome task = new Palindrome();
		String text = "KFGTFTITCSGRROUPT";
		int k = 4;
		// KFGTFTITCSGRROUP
		// All K characters resultant pair is
		// ((KFGT)
		// (ITCS)
		// (TCSG)
		// (CSGR)
		// (ROUP)
		// (OUPT)
		task.countDistinctK(text, k);
	}
}

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
<?php
// Php Program
// Count of substrings of length K with exactly K distinct characters
class Palindrome
{
	// Count all distinct k character of k length
	public	function countDistinctK($text, $k)
	{
		$count = 0;
		// Display calculated result
		echo " Given Text : ". $text;
		echo "\n K : ". $k;
		if ($k < strlen($text))
		{
			// Define loop controlling variable i
			$i = 0;
			// Use to count character frequency
			 $record = array();
			// Find the initials K character frequency
			for ($i = 0; $i < $k; $i++)
			{
				if (array_key_exists($text[$i], $record))
				{ // increase character frequency
					$record[$text[$i]] = $record[$text[$i]] + 1;
				}
				else
				{ // add new character
					$record[$text[$i]] = 1;
				}
			}
			if (count($record) == $k)
			{
				echo "\n(". substr($text, 0, $k).")";
				// Initials character are distinct
				$count = 1;
			}
			for ($i = $k; $i < strlen($text); $i++)
			{
				if (array_key_exists($text[$i], $record))
				{ // increase character frequency
					$record[$text[$i]] = $record[$text[$i]] + 1;
				}
				else
				{ // add new character
					$record[$text[$i]] = 1;
				}
				if ($record[$text[$i - $k]] > 1)
				{ // Reduce the (i - k) - th character frequency
					// Reduce character frequency
					$record[$text[$i - $k]] = $record[$text[$i - $k]] - 1;
				}
				else
				{
					unset( // When (i - k) - th character frequency is one then remove
						$record[$text[$i - $k]]);
				}
				if (count($record) == $k)
				{
					// When record size equal to k
					// increase resultant counter
					echo "\n(". substr($text, $i - $k + 1, $k) .")";
					$count++;
				}
			}
		}
		echo "\n Result : ". $count;
	}
}

function main()
{
	$task = new Palindrome();
	$text = "KFGTFTITCSGRROUPT";
	$k = 4;
	$task->countDistinctK($text, $k);
}
main();

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
// Node Js Program
// Count of substrings of length K with exactly K distinct characters
class Palindrome
{
	// Count all distinct k character of k length
	countDistinctK(text, k)
	{
		var count = 0;
		// Display calculated result
		process.stdout.write(" Given Text : " + text);
		process.stdout.write("\n K : " + k);
		if (k < text.length)
		{
			// Define loop controlling variable i
			var i = 0;
			// Use to count character frequency
			var record = new Map();
			// Find the initials K character frequency
			for (i = 0; i < k; i++)
			{
				if (record.has(text.charAt(i)))
				{
					// increase character frequency
					record.set(text.charAt(i), record.get(text.charAt(i)) + 1);
				}
				else
				{
					// add new character
					record.set(text.charAt(i), 1);
				}
			}
			if (record.size == k)
			{
				process.stdout.write("\n(" + text.substring(0, k) + ")");
				// Initials character are distinct
				count = 1;
			}
			for (i = k; i < text.length; i++)
			{
				if (record.has(text.charAt(i)))
				{
					// increase character frequency
					record.set(text.charAt(i), record.get(text.charAt(i)) + 1);
				}
				else
				{
					// add new character
					record.set(text.charAt(i), 1);
				}
				if (record.get(text.charAt(i - k)) > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record.set(text.charAt(i - k), record.get(text.charAt(i - k)) - 1);
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.delete(text.charAt(i - k));
				}
				if (record.size == k)
				{
					// When record size equal to k
					// increase resultant counter
					process.stdout.write("\n(" + text.substring(i - k + 1, i + 1) + ")");
					count++;
				}
			}
		}
		process.stdout.write("\n Result : " + count);
	}
}

function main()
{
	var task = new Palindrome();
	var text = "KFGTFTITCSGRROUPT";
	var k = 4;
	// KFGTFTITCSGRROUP
	// All K characters resultant pair is
	// ((KFGT)
	// (ITCS)
	// (TCSG)
	// (CSGR)
	// (ROUP)
	// (OUPT)
	task.countDistinctK(text, k);
}
main();

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
#  Python 3 Program
#  Count of substrings of length K with exactly K distinct characters
class Palindrome :
	#  Count all distinct k character of k length
	def countDistinctK(self, text, k) :
		count = 0
		#  Display calculated result
		print(" Given Text : ", text, end = "")
		print("\n K : ", k, end = "")
		if (k < len(text)) :
			#  Define loop controlling variable i
			i = 0
			#  Use to count character frequency
			record = dict()
			#  Find the initials K character frequency
			while (i < k) :
				if (text[i] in record.keys()) :
					#  increase character frequency
					record[text[i]] = record.get(text[i]) + 1
				else :
					#  add new character
					record[text[i]] = 1
				
				i += 1
			
			if (len(record) == k) :
				print("\n(", text[0: k] ,")", end = "")
				#  Initials character are distinct
				count = 1
			
			i = k
			while (i < len(text)) :
				if (text[i] in record.keys()) :
					#  increase character frequency
					record[text[i]] = record.get(text[i]) + 1
				else :
					#  add new character
					record[text[i]] = 1
				
				if (record.get(text[i - k]) > 1) :
					#  Reduce the (i - k) - th character frequency
					#  Reduce character frequency
					record[text[i - k]] = record.get(text[i - k]) - 1
				else :
					#  When (i - k) - th character frequency is one then remove
					del record[text[i - k]]
				
				if (len(record) == k) :
					#  When record size equal to k
					#  increase resultant counter
					print("\n(", text[i - k + 1: i + 1] ,")", end = "")
					count += 1
				
				i += 1
			
		
		print("\n Result : ", count, end = "")
	

def main() :
	task = Palindrome()
	text = "KFGTFTITCSGRROUPT"
	k = 4
	#  KFGTFTITCSGRROUP
	#  All K characters resultant pair is
	#  ((KFGT)
	#  (ITCS)
	#  (TCSG)
	#  (CSGR)
	#  (ROUP)
	#  (OUPT)
	task.countDistinctK(text, k)

if __name__ == "__main__": main()

Output

 Given Text :  KFGTFTITCSGRROUPT
 K :  4
( KFGT )
( ITCS )
( TCSG )
( CSGR )
( ROUP )
( OUPT )
 Result :  6
#  Ruby Program
#  Count of substrings of length K with exactly K distinct characters
class Palindrome 
	#  Count all distinct k character of k length
	def countDistinctK(text, k) 
		count = 0
		#  Display calculated result
		print(" Given Text : ", text)
		print("\n K : ", k)
		if (k < text.length) 
			#  Define loop controlling variable i
			i = 0
			#  Use to count character frequency
			record = Hash.new 
			#  Find the initials K character frequency
			while (i < k) 
				if (record.key?(text[i])) 
					record[text[i]] = record[text[i]] + 1
				else 
					record[text[i]] = 1
				end

				i += 1
			end

			if (record.size() == k) 
				print("\n(", text[0...k] ,")")
				#  Initials character are distinct
				count = 1
			end

			i = k
			while (i < text.length) 
				if (record.key?(text[i])) 
					record[text[i]] = record[text[i]] + 1
				else 
					record[text[i]] = 1
				end

				if (record[text[i - k]] > 1) 
					record[text[i - k]] = record[text[i - k]] - 1
				else 
					record.delete(text[i - k])
				end

				if (record.size() == k) 
					#  When record size equal to k
					#  increase resultant counter
					print("\n(", text[i - k + 1...i + 1] ,")")
					count += 1
				end

				i += 1
			end

		end

		print("\n Result : ", count)
	end

end

def main() 
	task = Palindrome.new()
	text = "KFGTFTITCSGRROUPT"
	k = 4
	#  KFGTFTITCSGRROUP
	#  All K characters resultant pair is
	#  ((KFGT)
	#  (ITCS)
	#  (TCSG)
	#  (CSGR)
	#  (ROUP)
	#  (OUPT)
	task.countDistinctK(text, k)
end

main()

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
import scala.collection.mutable._;
// Scala Program
// Count of substrings of length K with exactly K distinct characters
class Palindrome
{
	// Count all distinct k character of k length
	def countDistinctK(text: String, k: Int): Unit = {
		var count: Int = 0;
		// Display calculated result
		print(" Given Text : " + text);
		print("\n K : " + k);
		if (k < text.length())
		{
			// Define loop controlling variable i
			var i: Int = 0;
			// Use to count character frequency
			var record  = Map[Character, Int]();
			// Find the initials K character frequency
			while (i < k)
			{
				if (record.contains(text.charAt(i)))
				{
					// increase character frequency
					record.addOne(text.charAt(i), record.get(text.charAt(i)).get + 1);
				}
				else
				{
					// add new character
					record.addOne(text.charAt(i), 1);
				}
				i += 1;
			}
			if (record.size == k)
			{
				print("\n(" + text.substring(0, k) + ")");
				// Initials character are distinct
				count = 1;
			}
			i = k;
			while (i < text.length())
			{
				if (record.contains(text.charAt(i)))
				{
					// increase character frequency
					record.addOne(text.charAt(i), record.get(text.charAt(i)).get + 1);
				}
				else
				{
					// add new character
					record.addOne(text.charAt(i), 1);
				}
				if (record.get(text.charAt(i - k)).get > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record.addOne(text.charAt(i - k), record.get(text.charAt(i - k)).get - 1);
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.remove(text.charAt(i - k));
				}
				if (record.size == k)
				{
					// When record size equal to k
					// increase resultant counter
					print("\n(" + text.substring(i - k + 1, i + 1) + ")");
					count += 1;
				}
				i += 1;
			}
		}
		print("\n Result : " + count);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: Palindrome = new Palindrome();
		var text: String = "KFGTFTITCSGRROUPT";
		var k: Int = 4;
		// KFGTFTITCSGRROUP
		// All K characters resultant pair is
		// ((KFGT)
		// (ITCS)
		// (TCSG)
		// (CSGR)
		// (ROUP)
		// (OUPT)
		task.countDistinctK(text, k);
	}
}

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
// Kotlin Program
// Count of substrings of length K with exactly K distinct characters
class Palindrome
{
	// Count all distinct k character of k length
	fun countDistinctK(text: String, k: Int): Unit
	{
		var count: Int = 0;
		// Display calculated result
		print(" Given Text : " + text);
		print("\n K : " + k);
		if (k < text.length)
		{
			// Define loop controlling variable i
			var i: Int = 0;
			// Use to count character frequency
			var record = mutableMapOf < Char , Int > ();
			// Find the initials K character frequency
			while (i < k)
			{
				if (record.containsKey(text.get(i)))
				{
					// increase character frequency
					record.put(text.get(i), record.getValue(text.get(i)) + 1);
				}
				else
				{
					// add new character
					record.put(text.get(i), 1);
				}
				i += 1;
			}
			if (record.count() == k)
			{
				print("\n(" + text.subSequence(0, k) + ")").toString();
				// Initials character are distinct
				count = 1;
			}
			i = k;
			while (i < text.length)
			{
				if (record.containsKey(text.get(i)))
				{
					// increase character frequency
					record.put(text.get(i), record.getValue(text.get(i)) + 1);
				}
				else
				{
					// add new character
					record.put(text.get(i), 1);
				}
				if (record.getValue(text.get(i - k)) > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record.put(text.get(i - k), record.getValue(text.get(i - k)) - 1);
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.remove(text.get(i - k));
				}
				if (record.count() == k)
				{
					// When record size equal to k
					// increase resultant counter
					print("\n(" + text.subSequence(i - k + 1, i + 1).toString() + ")");
					count += 1;
				}
				i += 1;
			}
		}
		print("\n Result : " + count);
	}
}
fun main(args: Array < String > ): Unit
{
	var task: Palindrome = Palindrome();
	var text: String = "KFGTFTITCSGRROUPT";
	var k: Int = 4;
	// KFGTFTITCSGRROUP
	// All K characters resultant pair is
	// ((KFGT)
	// (ITCS)
	// (TCSG)
	// (CSGR)
	// (ROUP)
	// (OUPT)
	task.countDistinctK(text, k);
}

Output

 Given Text : KFGTFTITCSGRROUPT
 K : 4
(KFGT)
(ITCS)
(TCSG)
(CSGR)
(ROUP)
(OUPT)
 Result : 6
import Foundation
// Swift 4 Program
// Count of substrings of length K with exactly K distinct characters
class Palindrome
{
	// Count all distinct k character of k length
	func countDistinctK(_ t: String, _ k: Int)
	{
        var text = Array(t);
		var count: Int = 0;
		// Display calculated result
		print(" Given Text : ", t, terminator: "");
		print("\n K : ", k, terminator: "");
		if (k < text.count)
		{
			// Define loop controlling variable i
			var i: Int = 0;
			// Use to count character frequency
			var record = [Character: Int]();
			// Find the initials K character frequency
			while (i < k)
			{
				if (record.keys.contains(text[i]))
				{
					// increase character frequency
					record[text[i]] = record[text[i]]! + 1;
				}
				else
				{
					// add new character
					record[text[i]] = 1;
				}
				i += 1;
			}
			if (record.count == k)
			{
               // find index of substring
              
				print("\n(", String(text.prefix(k)) ,")", terminator: "");
				// Initials character are distinct
				count = 1;
			}
			i = k;
			while (i < text.count)
			{
				if (record.keys.contains(text[i]))
				{
					// increase character frequency
					record[text[i]] = record[text[i]]! + 1;
				}
				else
				{
					// add new character
					record[text[i]] = 1;
				}
				if (record[text[i - k]]! > 1)
				{
					// Reduce the (i - k) - th character frequency
					// Reduce character frequency
					record[text[i - k]] = record[text[i - k]]! - 1;
				}
				else
				{
					// When (i - k) - th character frequency is one then remove
					record.removeValue(forKey: text[i - k]);
				}
				if (record.count == k)
				{
                    // find index of substring
                    let range = (i - k + 1)..<( i + 1);
					// When record size equal to k
					// increase resultant counter
					print("\n(", String(text[range]) ,")", terminator: "");
					count += 1;
				}
				i += 1;
			}
		}
		print("\n Result : ", count, terminator: "");
	}
}
func main()
{
	let task: Palindrome = Palindrome();
	let text: String = "KFGTFTITCSGRROUPT";
	let k: Int = 4;
	// KFGTFTITCSGRROUP
	// All K characters resultant pair is
	// ((KFGT)
	// (ITCS)
	// (TCSG)
	// (CSGR)
	// (ROUP)
	// (OUPT)
	task.countDistinctK(text, k);
}
main();

Output

 Given Text :  KFGTFTITCSGRROUPT
 K :  4
( KFGT )
( ITCS )
( TCSG )
( CSGR )
( ROUP )
( OUPT )
 Result :  6

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