Hash

Print the characters by frequency

Here given code implementation process.

// Java Program 
// Print the characters by frequency
import java.util.HashMap;
import java.util.ArrayList;
public class Frequency
{
	public void findFrequency(String text)
	{
		// Use to collect character frequency
		HashMap < Character, Integer > record = 
          new HashMap < Character, Integer > ();
		HashMap < Integer, ArrayList < Character > > result = 
          new HashMap < Integer, ArrayList < Character > > ();
		// Find the frequency of character
		for (int i = 0; i < text.length(); ++i)
		{
			if (record.containsKey(text.charAt(i)))
			{
				// When element exist
				// Increase the element frequency
				record.put(text.charAt(i), record.get(text.charAt(i)) + 1);
			}
			else
			{
				// Add new character record
				record.put(text.charAt(i), 1);
			}
		}
		// Combine elements by frequency
		for (char key: record.keySet())
		{
			if (result.containsKey(record.get(key)) == false)
			{
				result.put(record.get(key), new ArrayList < Character > ());
			}
			result.get(record.get(key)).add(key);
		}
		// Display element by Occurrences
		for (int freq: result.keySet())
		{
			ArrayList < Character > ans = result.get(freq);
			System.out.print(" Frequency : " + freq + "\n");
			// Display character
			for (char data: ans)
			{
				System.out.print("  " + data);
			}
			System.out.print("\n");
		}
	}
	public static void main(String[] args)
	{
		Frequency task = new Frequency();
      	// Given text
		String text = "abcaaafklZfdelebefa";
		task.findFrequency(text);
	}
}

Output

 Frequency : 1
  c  d  Z  k
 Frequency : 2
  b  l
 Frequency : 3
  e  f
 Frequency : 5
  a

// Include header file
#include <iostream>
#include <string>
#include <map>
#include <unordered_map>
#include <vector>
using namespace std;

// C++ Program
// Print the characters by frequency

class Frequency
{
	public: void findFrequency(string text)
	{
		// Use to collect character frequency
		unordered_map < char, int > record ;
      	// Use to combine elements by frequency
		map < int, vector < char > > result;
		// Find the frequency of character
		for (int i = 0; i < text.length(); ++i)
		{
			if (record.find(text[i]) != record.end())
			{
				// When element exist
				// Increase the element frequency
				record[text[i]] = record[text[i]] + 1;
			}
			else
			{
				// Add new character record
				record[text[i]] = 1;
			}
		}
      	// Group characters by frequency
		for (auto &key: record)
		{
			result[key.second].push_back(key.first);
		}
      	// Display calculated result
		for (auto &freq: result)
		{
			vector < char > ans = result[freq.first];
			cout << " Frequency : " << freq.first << "\n";
			for (vector<char>::iterator data = ans.begin(); 
                 data != ans.end(); data++)
			{
				cout << "  " << *data;
			}
			cout << "\n";
		}
	}
};
int main()
{
	Frequency task = Frequency();
	// Given text
	string text = "abcaaafklZfdelebefa";
	task.findFrequency(text);
	return 0;
}

Output

 Frequency : 1
  d  Z  k  c
 Frequency : 2
  l  b
 Frequency : 3
  e  f
 Frequency : 5
  a

// Include namespace system
using System;
using System.Collections.Generic;
// C# Program
// Print the characters by frequency
public class Frequency
{
	public void findFrequency(String text)
	{
		// Use to collect character frequency
		Dictionary < char, int > record = new Dictionary < char, int > ();
		Dictionary < int, List < char > > result = new Dictionary < int, List < char > > ();
		// Find the frequency of character
		for (int i = 0; i < text.Length; ++i)
		{
			if (record.ContainsKey(text[i]))
			{
				// When element exist
				// Increase the element frequency
				record[text[i]] = record[text[i]] + 1;
			}
			else
			{
				// Add new character record
				record.Add(text[i], 1);
			}
		}
		foreach(KeyValuePair < char, int > info in record)
		{
			if (result.ContainsKey(info.Value) == false)
			{
				result.Add(record[info.Key], new List < char > ());
			}
			result[info.Value].Add(info.Key);
		}
		foreach(KeyValuePair < int, List < char > > freq in result)
		{
			List < char > ans = freq.Value;
			Console.Write(" Frequency : " + freq.Key + "\n");
			foreach(char data in ans)
			{
				Console.Write("  " + data);
			}
			Console.Write("\n");
		}
	}
	public static void Main(String[] args)
	{
		Frequency task = new Frequency();
		// Given text
		String text = "abcaaafklZfdelebefa";
		task.findFrequency(text);
	}
}

Output

 Frequency : 5
  a
 Frequency : 2
  b  l
 Frequency : 1
  c  k  Z  d
 Frequency : 3
  f  e

<?php
// Php Program
// Print the characters by frequency
class Frequency
{
	public	function findFrequency($text)
	{
		// Use to collect character frequency
		$record = array(); 
      	$result = array();
		// Find the frequency of character
		for ($i = 0; $i < strlen($text); ++$i)
		{
			if (array_key_exists($text[$i], $record))
			{ // When element exist
				// Increase the element frequency
				$record[$text[$i]] = $record[$text[$i]] + 1;
			}
			else
			{ // Add new character record
				$record[$text[$i]] = 1;
			}
		}
		foreach($record as $key => $value)
		{
			$result[$record[$key]][] = $key;
		}
		foreach($result as $freq => $value)
		{
			$ans =  $value;
			echo " Frequency : ". $freq ."\n";
			foreach($ans as $data)
			{
				echo "  ". $data;
			}
			echo "\n";
		}
	}
}

function main()
{
	$task = new Frequency();
	// Given text
	$text = "abcaaafklZfdelebefa";
	$task->findFrequency($text);
}
main();

Output

 Frequency : 5
  a
 Frequency : 2
  b  l
 Frequency : 1
  c  k  Z  d
 Frequency : 3
  f  e

// Node Js Program
// Print the characters by frequency
class Frequency
{
	findFrequency(text)
	{
		// Use to collect character frequency

		var record = new Map();
		var result = new Map();
		// Find the frequency of character
		for (var i = 0; i < text.length; ++i)
		{
			if (record.has(text.charAt(i)))
			{
				// When element exist
				// Increase the element frequency
				record.set(text.charAt(i), record.get(text.charAt(i)) + 1);
			}
			else
			{
				// Add new character record
				record.set(text.charAt(i), 1);
			}
		}
		for (let [key, value] of record)
		{
			if (result.has(value) == false)
			{
				result.set(record.get(key), []);
			}
			result.get(value).push(key);
		}
		for (let [freq, value] of result)
		{
			var ans = value;
			console.log(" Frequency : " + freq );
			for (let data of ans)
			{
				process.stdout.write("  " + data);
			}
			console.log();
		}
	}
}

function main()
{
	var task = new Frequency();
	// Given text
	var text = "abcaaafklZfdelebefa";
	task.findFrequency(text);
}
main();

Output

 Frequency : 5
  a
 Frequency : 2
  b  l
 Frequency : 1
  c  k  Z  d
 Frequency : 3
  f  e

#  Python 3 Program 
#  Print the characters by frequency
class Frequency :
    def findFrequency(self, text) :
        #  Use to collect character frequency
        record = dict() 
        result = dict() 
        #  Find the frequency of character
        i = 0
        while (i < len(text)) :
            if (text[i] in record.keys()) :
                #  When element exist
                #  Increase the element frequency
                record[text[i]] = record.get(text[i]) + 1
            else :
                #  Add new character record
                record[text[i]] = 1
            i += 1

        for key, value in record.items() :
            if ((value in result.keys()) == False) :
                result[record.get(key)] = []
            result.get(record.get(key)).append(key)

        for freq, value in result.items() :
            ans = result.get(freq)
            print(" Frequency : ", freq )
            for data in ans :
                print("  ", data, end = "")
            print(end = "\n")

def main() :
    task = Frequency()
    #  Given text
    text = "abcaaafklZfdelebefa"
    task.findFrequency(text)

if __name__ == "__main__": main()

Output

 Frequency :  1
   c   d   k   Z
 Frequency :  2
   l   b
 Frequency :  3
   e   f
 Frequency :  5
   a

#  Ruby Program 
#  Print the characters by frequency
class Frequency 
	def findFrequency(text) 
		#  Use to collect character frequency
		record = Hash.new 
		result = Hash.new 
		#  Find the frequency of character
		i = 0
		while (i < text.length) 
			if (record.key?(text[i])) 
				record[text[i]] = record[text[i]] + 1
			else 
				record[text[i]] = 1
			end
			i += 1
		end

        record.each { | key, value | 
            if (result.key?(value) == false) 
                result[value] = []
            end

            result[value].push(key)
        }
        result.each { | freq, value | 
            ans = value
            print(" Frequency : ", freq ,"\n")
            for data in ans do 
                print("  ", data)
            end
            print("\n")
        }
    end
end
def main() 
	task = Frequency.new()
	#  Given text
	text = "abcaaafklZfdelebefa"
	task.findFrequency(text)
end

main()

Output

 Frequency : 5
  a
 Frequency : 2
  b  l
 Frequency : 1
  c  k  Z  d
 Frequency : 3
  f  e

import scala.collection.mutable._;
// Scala Program
// Print the characters by frequency
class Frequency
{
	def findFrequency(text: String): Unit = {
		// Use to collect character frequency
		var record = Map[Char, Int]();
		var result = Map[Int, ArrayBuffer[Char]]();
		// Find the frequency of character
		var i = 0;
		while (i < text.length())
		{
			if (record.contains(text.charAt(i)))
			{
				// When element exist
				// Increase the element frequency
				record.addOne(text.charAt(i), record.get(text.charAt(i)).get + 1);
			}
			else
			{
				// Add new character record
				record.addOne(text.charAt(i), 1);
			}
			i += 1;
		}
		for ((k, v) <- record)
		{
			if (result.contains(v) == false)
			{
				result.addOne(v, new ArrayBuffer[Char]());
			}
			result.get(v).get.append(k);
		}
		for ((k, v) <- result)
		{
			var ans = v;
			print(" Frequency : " + k + "\n");
			for (data <- ans)
			{
				print("  " + data);
			}
			print("\n");
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: Frequency = new Frequency();
		// Given text
		var text: String = "abcaaafklZfdelebefa";
		task.findFrequency(text);
	}
}

Output

 Frequency : 1
  c  d  Z  k
 Frequency : 2
  b  l
 Frequency : 3
  e  f
 Frequency : 5
  a

import Foundation
// Swift 4 Program
// Print the characters by frequency
class Frequency
{
	func findFrequency(_ t: String)
	{
		// Use to collect character frequency
		let text = Array(t);
		var record = [Character: Int]();
		var result = [Int: [Character]]();
		// Find the frequency of character
		var i = 0;
		while (i < text.count)
		{
			if (record.keys.contains(text[i]))
			{
				// When element exist
				// Increase the element frequency
				record[text[i]] = record[text[i]]! + 1;
			}
			else
			{
				// Add new character record
				record[text[i]] = 1;
			}
			i += 1;
		}
		for (key, value) in record
		{
			if (result.keys.contains(value) == false)
			{
				result[value] = [Character]();
			}
			result[value]!.append(key);
		}
		for (key, value) in result
		{
			let ans = value;
			print(" Frequency : ", key);
			for data in ans
			{
				print("  ", data, terminator: "");
			}
			print(terminator: "\n");
		}
	}
}
func main()
{
	let task: Frequency = Frequency();
	// Given text
	let text: String = "abcaaafklZfdelebefa";
	task.findFrequency(text);
}
main();

Output

 Frequency :  5
   a
 Frequency :  2
   b   l
 Frequency :  3
   f   e
 Frequency :  1
   c   d   Z   k

// Kotlin Program
// Print the characters by frequency
class Frequency
{
	fun findFrequency(text: String): Unit
	{
		// Use to collect character frequency
		var record = mutableMapOf<Char, Int>();
		var result = mutableMapOf < Int , ArrayList < Char > > (); 
		// Find the frequency of character
		var i = 0;
		while (i < text.length)
		{
			if (record.containsKey(text.get(i)))
			{
				// When element exist
				// Increase the element frequency
				record.put(text.get(i), record.getValue(text.get(i)) + 1);
			}
			else
			{
				// Add new character record
				record.put(text.get(i), 1);
			}
			i += 1;
		}
		// Combine elements by frequency
		for (key in record.keys)
		{
			if (result.containsKey(record.getValue(key)) == false)
			{
				result.put(record.getValue(key), ArrayList <Char> ());
			}
			result.getValue(record.getValue(key)).add(key);
		}
		// Display element by Occurrences
		for (key in result.keys)
		{
			
			var ans = result.getValue(key);
			print(" Frequency : " + key + "\n");
			// Display character
			for (data in ans)
			{
				print("  " + data);
			}
			print("\n");
		}
	}
}
fun main(args: Array <String> ): Unit
{
	var task: Frequency = Frequency();
	// Given text
	var text: String = "abcaaafklZfdelebefa";
	task.findFrequency(text);
}

Output

 Frequency : 5
  a
 Frequency : 2
  b  l
 Frequency : 1
  c  k  Z  d
 Frequency : 3
  f  e

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