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Count number of unique characters in a string

Here given code implementation process.

/*
    C program for
    Count number of unique characters in a string
*/
#include <stdio.h>
#include <string.h>

void countUniqueChar(char *text)
{
	int n = strlen(text);
	if (n == 0)
	{
		return;
	}
	int result = 0;
	int record[256];
	// Set initial count of character record
	for (int i = 0; i < 256; ++i)
	{
		record[i] = 0;
	}
	// Count frequency of character element
	for (int i = 0; i < n; ++i)
	{
		record[text[i]] = record[text[i]] + 1;
	}
	for (int i = 0; i < n; ++i)
	{
		if (record[text[i]] == 1)
		{
			// When [i] location character appears  once
			result++;
		}
	}
	printf("\n Given Text : %s", text);
	printf("\n Number of unique characters is %d", result);
}
int main(int argc, char
	const *argv[])
{
	// Given Sting text
	char *text1 = "office";
	char *text2 = "error";
	char *text3 = "xxxx";
	// Test
	countUniqueChar(text1);
	countUniqueChar(text2);
	countUniqueChar(text3);
	return 0;
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
/*
    Java program for
    Count number of unique characters in a string
*/
public class NonRepetitive
{
    public void countUniqueChar(String text)
    {
        int n = text.length();
        if (n == 0)
        {
            return;
        }
        int result = 0;
        int[] record = new int[256];
        // Set initial count of character record
        for (int i = 0; i < 256; ++i)
        {
            record[i] = 0;
        }
        // Count frequency of character element
        for (int i = 0; i < n; ++i)
        {
            record[text.charAt(i)] += 1;
        }
        for (int i = 0; i < n; ++i)
        {
            if (record[text.charAt(i)] == 1)
            {
                // When [i] location character appears  once
                result++;
            }
        }
        System.out.print("\n Given Text : " + text);
        System.out.print("\n Number of unique characters is " + result );
    }
    public static void main(String[] args)
    {
        NonRepetitive task = new NonRepetitive();

        // Given Sting text
        String text1 = "office";
        String text2 = "error";
        String text3 = "xxxx";
        // Test
        task.countUniqueChar(text1);
        task.countUniqueChar(text2);
        task.countUniqueChar(text3);

    }
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
// Include header file
#include <iostream>
#include <string>

using namespace std;
/*
    C++ program for
    Count number of unique characters in a string
*/
class NonRepetitive
{
	public: void countUniqueChar(string text)
	{
		int n = text.length();
		if (n == 0)
		{
			return;
		}
		int result = 0;
		int record[256];
		// Set initial count of character record
		for (int i = 0; i < 256; ++i)
		{
			record[i] = 0;
		}
		// Count frequency of character element
		for (int i = 0; i < n; ++i)
		{
			record[text[i]] += 1;
		}
		for (int i = 0; i < n; ++i)
		{
			if (record[text[i]] == 1)
			{
				// When [i] location character appears  once
				result++;
			}
		}
		cout << "\n Given Text : " << text;
		cout << "\n Number of unique characters is " << result;
	}
};
int main()
{
	NonRepetitive *task = new NonRepetitive();
	// Given Sting text
	string text1 = "office";
	string text2 = "error";
	string text3 = "xxxx";
	// Test
	task->countUniqueChar(text1);
	task->countUniqueChar(text2);
	task->countUniqueChar(text3);
	return 0;
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
// Include namespace system
using System;
/*
    Csharp program for
    Count number of unique characters in a string
*/
public class NonRepetitive
{
	public void countUniqueChar(String text)
	{
		int n = text.Length;
		if (n == 0)
		{
			return;
		}
		int result = 0;
		int[] record = new int[256];
		// Set initial count of character record
		for (int i = 0; i < 256; ++i)
		{
			record[i] = 0;
		}
		// Count frequency of character element
		for (int i = 0; i < n; ++i)
		{
			record[text[i]] += 1;
		}
		for (int i = 0; i < n; ++i)
		{
			if (record[text[i]] == 1)
			{
				// When [i] location character appears  once
				result++;
			}
		}
		Console.Write("\n Given Text : " + text);
		Console.Write("\n Number of unique characters is " + result);
	}
	public static void Main(String[] args)
	{
		NonRepetitive task = new NonRepetitive();
		// Given Sting text
		String text1 = "office";
		String text2 = "error";
		String text3 = "xxxx";
		// Test
		task.countUniqueChar(text1);
		task.countUniqueChar(text2);
		task.countUniqueChar(text3);
	}
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
package main
import "fmt"
/*
    Go program for
    Count number of unique characters in a string
*/

func countUniqueChar(text string) {
	var n int = len(text)
	if n == 0 {
		return
	}
	var result int = 0
	var record = make([] int,256)
	// Count frequency of character element
	for i := 0 ; i < n ; i++ {
		record[text[i]] += 1
	}
	for i := 0 ; i < n ; i++ {
		if record[text[i]] == 1 {
			// When [i] location character appears  once
			result++
		}
	}
	fmt.Print("\n Given Text : ", text)
	fmt.Print("\n Number of unique characters is ", result)
}
func main() {

	// Given Sting text
	var text1 string = "office"
	var text2 string = "error"
	var text3 string = "xxxx"
	// Test
	countUniqueChar(text1)
	countUniqueChar(text2)
	countUniqueChar(text3)
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
<?php
/*
    Php program for
    Count number of unique characters in a string
*/
class NonRepetitive
{
	public	function countUniqueChar($text)
	{
		$n = strlen($text);
		if ($n == 0)
		{
			return;
		}
		$result = 0;
		$record = array_fill(0, 256, 0);
		// Count frequency of character element
		for ($i = 0; $i < $n; ++$i)
		{
			$record[ord($text[$i])] += 1;
		}
		for ($i = 0; $i < $n; ++$i)
		{
			if ($record[ord($text[$i])] == 1)
			{
				// When [i] location character appears  once
				$result++;
			}
		}
		echo("\n Given Text : ".$text);
		echo("\n Number of unique characters is ".$result);
	}
}

function main()
{
	$task = new NonRepetitive();
	// Given Sting text
	$text1 = "office";
	$text2 = "error";
	$text3 = "xxxx";
	// Test
	$task->countUniqueChar($text1);
	$task->countUniqueChar($text2);
	$task->countUniqueChar($text3);
}
main();

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
/*
    Node JS program for
    Count number of unique characters in a string
*/
class NonRepetitive
{
	countUniqueChar(text)
	{
		var n = text.length;
		if (n == 0)
		{
			return;
		}
		var result = 0;
		var record = Array(256).fill(0);
		// Count frequency of character element
		for (var i = 0; i < n; ++i)
		{
			record[text.charCodeAt(i)] += 1;
		}
		for (var i = 0; i < n; ++i)
		{
			if (record[text.charCodeAt(i)] == 1)
			{
				// When [i] location character appears  once
				result++;
			}
		}
		process.stdout.write("\n Given Text : " + text);
		process.stdout.write("\n Number of unique characters is " + result);
	}
}

function main()
{
	var task = new NonRepetitive();
	// Given Sting text
	var text1 = "office";
	var text2 = "error";
	var text3 = "xxxx";
	// Test
	task.countUniqueChar(text1);
	task.countUniqueChar(text2);
	task.countUniqueChar(text3);
}
main();

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
#    Python 3 program for
#    Count number of unique characters in a string
class NonRepetitive :
	def countUniqueChar(self, text) :
		n = len(text)
		if (n == 0) :
			return
		
		result = 0
		record = [0] * (256)
		i = 0
		#  Count frequency of character element
		while (i < n) :
			record[ord(text[i])] += 1
			i += 1
		
		i = 0
		while (i < n) :
			if (record[ord(text[i])] == 1) :
				#  When [i] location character appears  once
				result += 1
			
			i += 1
		
		print("\n Given Text : ", text, end = "")
		print("\n Number of unique characters is ", result, end = "")
	

def main() :
	task = NonRepetitive()
	#  Given Sting text
	text1 = "office"
	text2 = "error"
	text3 = "xxxx"
	#  Test
	task.countUniqueChar(text1)
	task.countUniqueChar(text2)
	task.countUniqueChar(text3)

if __name__ == "__main__": main()

Output

 Given Text :  office
 Number of unique characters is  4
 Given Text :  error
 Number of unique characters is  2
 Given Text :  xxxx
 Number of unique characters is  0
#    Ruby program for
#    Count number of unique characters in a string
class NonRepetitive 
	def countUniqueChar(text) 
		n = text.length
		if (n == 0) 
			return
		end

		result = 0
		record = Array.new(256) {0}
		i = 0
		#  Count frequency of character element
		while (i < n) 
			record[text[i].ord] += 1
			i += 1
		end

		i = 0
		while (i < n) 
			if (record[text[i].ord] == 1) 
				#  When [i] location character appears  once
				result += 1
			end

			i += 1
		end

		print("\n Given Text : ", text)
		print("\n Number of unique characters is ", result)
	end

end

def main() 
	task = NonRepetitive.new()
	#  Given Sting text
	text1 = "office"
	text2 = "error"
	text3 = "xxxx"
	#  Test
	task.countUniqueChar(text1)
	task.countUniqueChar(text2)
	task.countUniqueChar(text3)
end

main()

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
/*
    Scala program for
    Count number of unique characters in a string
*/
class NonRepetitive()
{
	def countUniqueChar(text: String): Unit = {
		var n: Int = text.length();
		if (n == 0)
		{
			return;
		}
		var result: Int = 0;
		var record: Array[Int] = Array.fill[Int](256)(0);
		var i: Int = 0;
		// Count frequency of character element
		while (i < n)
		{
			record(text.charAt(i)) += 1;
			i += 1;
		}
		i = 0;
		while (i < n)
		{
			if (record(text.charAt(i)) == 1)
			{
				// When [i] location character appears  once
				result += 1;
			}
			i += 1;
		}
		print("\n Given Text : " + text);
		print("\n Number of unique characters is " + result);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: NonRepetitive = new NonRepetitive();
		// Given Sting text
		var text1: String = "office";
		var text2: String = "error";
		var text3: String = "xxxx";
		// Test
		task.countUniqueChar(text1);
		task.countUniqueChar(text2);
		task.countUniqueChar(text3);
	}
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
import Foundation;
/*
    Swift 4 program for
    Count number of unique characters in a string
*/
class NonRepetitive
{
	func countUniqueChar(_ data: String)
	{
      	let text = Array(data);
		let n: Int = text.count;
		if (n == 0)
		{
			return;
		}
		var result: Int = 0;
		var record: [Int] = Array(repeating: 0, count: 256);
		var i: Int = 0;
      	var index: Int = 0;
		// Count frequency of character element
		while (i < n)
		{
          	index = Int(UnicodeScalar(String(text[i]))!.value);
			record[index] += 1;
			i += 1;
		}
		i = 0;
		while (i < n)
		{
          	index = Int(UnicodeScalar(String(text[i]))!.value);
			if (record[index] == 1)
			{
				// When [i] location character appears  once
				result += 1;
			}
			i += 1;
		}
		print("\n Given Text : ", data, terminator: "");
		print("\n Number of unique characters is ", result, terminator: "");
	}
}
func main()
{
	let task: NonRepetitive = NonRepetitive();
	// Given Sting text
	let text1: String = "office";
	let text2: String = "error";
	let text3: String = "xxxx";
	// Test
	task.countUniqueChar(text1);
	task.countUniqueChar(text2);
	task.countUniqueChar(text3);
}
main();

Output

 Given Text :  office
 Number of unique characters is  4
 Given Text :  error
 Number of unique characters is  2
 Given Text :  xxxx
 Number of unique characters is  0
/*
    Kotlin program for
    Count number of unique characters in a string
*/
class NonRepetitive
{
	fun countUniqueChar(text: String): Unit
	{
		val n: Int = text.length;
		if (n == 0)
		{
			return;
		}
		var result: Int = 0;
		val record: Array < Int > = Array(256)
		{
			0
		};
		var i: Int = 0;
		// Count frequency of character element
		while (i < n)
		{
			record[text.get(i).toInt()] += 1;
			i += 1;
		}
		i = 0;
		while (i < n)
		{
			if (record[text.get(i).toInt()] == 1)
			{
				// When [i] location character appears  once
				result += 1;
			}
			i += 1;
		}
		print("\n Given Text : " + text);
		print("\n Number of unique characters is " + result);
	}
}
fun main(args: Array < String > ): Unit
{
	val task: NonRepetitive = NonRepetitive();
	// Given Sting text
	val text1: String = "office";
	val text2: String = "error";
	val text3: String = "xxxx";
	// Test
	task.countUniqueChar(text1);
	task.countUniqueChar(text2);
	task.countUniqueChar(text3);
}

Output

 Given Text : office
 Number of unique characters is 4
 Given Text : error
 Number of unique characters is 2
 Given Text : xxxx
 Number of unique characters is 0
Last updated on by Kalkicode




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