Posted on by Kalkicode
Code Mathematics

Replacing one digit with other in an integer

Process of changing a specific digit occurrence within a number to a different digit. For example, if you have the number 12325 and you want to replace the occurrence of the digit 2 with the digit 6, you would end up with the number 16365.

Program Solution

// C Program
// Replacing one digit with other in an integer
#include <stdio.h>

void replaceDigit(int number, int digit, int x)
{
	if (x < 0 || x > 9 || digit < 0 || digit > 9)
	{
		// When of given digit is not valid
		return;
	}
	int n = number;
	int result = 0;
	if (n < 0)
	{
		// Make positive
		n = -n;
	}
	if (digit == 0 && n == 0)
	{
		// When zero replace by x
		result = x;
	}
	else
	{
		// Auxiliary variable
		int temp = 0;
		int mul = 1;
		while (n > 0)
		{
			// Get last digit of n
			temp = n % 10;
			if (temp == digit)
			{
				// Include new digit
				result = (x *mul) + result;
			}
			else
			{
				result = (temp *mul) + result;
			}
			// Remove last digit of n
			n = n / 10;
			mul = mul *10;
		}
		if (number < 0)
		{
			result = -result;
		}
	}
	// Display given numbers
	printf("\n Given Number : %d", number);
	printf("\n Digit %d with replace by %d", digit, x);
	// Display calculated result
	printf("\n Result %d ", result);
}
int main()
{
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	replaceDigit(71761, 7, 0);
	return 0;
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
/*
    Java program
    Replacing one digit with other in an integer
*/
public class Interchange
{
	public void replaceDigit(int number, int digit, int x)
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		int n = number;
		int result = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			int temp = 0;
			int mul = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		System.out.print("\n Given Number : " + number );
		System.out.print("\n Digit " + digit + " with replace by " + x );
		// Display calculated result
		System.out.print("\n Result " + result );
	}
	public static void main(String[] args)
	{
		Interchange task = new Interchange();
		// Test A
		// Given number    : 1323  
		// Replacing digit : 3 
		// Replaced by     : 9
		// Result 1929
		task.replaceDigit(1323, 3, 9);
		// Test B
		// Given number    : -1161  
		// Replacing digit : 1 
		// Replaced by     : 3
		// Result -3363
		task.replaceDigit(-1161, 1, 3);
		// Test C
		// Given number    : 71761  
		// Replacing digit : 7 
		// Replaced by     : 0
		// Result 1061
		task.replaceDigit(71761, 7, 0);
	}
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
// Include header file
#include <iostream>
using namespace std;
/*
    C++ program
    Replacing one digit with other in an integer
*/
class Interchange
{
	public: void replaceDigit(int number, int digit, int x)
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		int n = number;
		int result = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			int temp = 0;
			int mul = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x *mul) + result;
				}
				else
				{
					result = (temp *mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul *10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		cout << "\n Given Number : " << number;
		cout << "\n Digit " << digit 
      		 << " with replace by " << x;
		// Display calculated result
		cout << "\n Result " << result;
	}
};
int main()
{
	Interchange *task = new Interchange();
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	task->replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	task->replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	task->replaceDigit(71761, 7, 0);
	return 0;
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
// Include namespace system
using System;
/*
    Csharp program
    Replacing one digit with other in an integer
*/
public class Interchange
{
	public void replaceDigit(int number, int digit, int x)
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		int n = number;
		int result = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			int temp = 0;
			int mul = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		Console.Write("\n Given Number : " + number);
		Console.Write("\n Digit " + digit + " with replace by " + x);
		// Display calculated result
		Console.Write("\n Result " + result);
	}
	public static void Main(String[] args)
	{
		Interchange task = new Interchange();
		// Test A
		// Given number    : 1323  
		// Replacing digit : 3 
		// Replaced by     : 9
		// Result 1929
		task.replaceDigit(1323, 3, 9);
		// Test B
		// Given number    : -1161  
		// Replacing digit : 1 
		// Replaced by     : 3
		// Result -3363
		task.replaceDigit(-1161, 1, 3);
		// Test C
		// Given number    : 71761  
		// Replacing digit : 7 
		// Replaced by     : 0
		// Result 1061
		task.replaceDigit(71761, 7, 0);
	}
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
package main
import "fmt"
/*
    Go program
    Replacing one digit with other in an integer
*/
func replaceDigit(number, digit, x int) {
	if x < 0 || x > 9 || digit < 0 || digit > 9 {
		// When of given digit is not valid
		return
	}
	var n int = number
	var result int = 0
	if n < 0 {
		// Make positive
		n = -n
	}
	if digit == 0 && n == 0 {
		// When zero replace by x
		result = x
	} else {
		// Auxiliary variable
		var temp int = 0
		var mul int = 1
		for (n > 0) {
			// Get last digit of n
			temp = n % 10
			if temp == digit {
				// Include new digit
				result = (x * mul) + result
			} else {
				result = (temp * mul) + result
			}
			// Remove last digit of n
			n = n / 10
			mul = mul * 10
		}
		if number < 0 {
			result = -result
		}
	}
	// Display given numbers
	fmt.Print("\n Given Number : ", number)
	fmt.Print("\n Digit ", digit, " with replace by ", x)
	// Display calculated result
	fmt.Print("\n Result ", result)
}
func main() {
	
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	replaceDigit(1323, 3, 9)
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	replaceDigit(-1161, 1, 3)
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	replaceDigit(71761, 7, 0)
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
<?php
/*
    Php program
    Replacing one digit with other in an integer
*/
class Interchange
{
	public	function replaceDigit($number, $digit, $x)
	{
		if ($x < 0 || $x > 9 || $digit < 0 || $digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		$n = $number;
		$result = 0;
		if ($n < 0)
		{
			// Make positive
			$n = -$n;
		}
		if ($digit == 0 && $n == 0)
		{
			// When zero replace by x
			$result = $x;
		}
		else
		{
			// Auxiliary variable
			$temp = 0;
			$mul = 1;
			while ($n > 0)
			{
				// Get last digit of n
				$temp = $n % 10;
				if ($temp == $digit)
				{
					// Include new digit
					$result = ($x * $mul) + $result;
				}
				else
				{
					$result = ($temp * $mul) + $result;
				}
				// Remove last digit of n
				$n = (int)($n / 10);
				$mul = $mul * 10;
			}
			if ($number < 0)
			{
				$result = -$result;
			}
		}
		// Display given numbers
		echo("\n Given Number : ".$number);
		echo("\n Digit ".$digit.
			" with replace by ".$x);
		// Display calculated result
		echo("\n Result ".$result);
	}
}

function main()
{
	$task = new Interchange();
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	$task->replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	$task->replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	$task->replaceDigit(71761, 7, 0);
}
main();

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
/*
    Node JS program
    Replacing one digit with other in an integer
*/
class Interchange
{
	replaceDigit(number, digit, x)
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		var n = number;
		var result = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			var temp = 0;
			var mul = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = parseInt(n / 10);
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		process.stdout.write("\n Given Number : " + number);
		process.stdout.write("\n Digit " + digit + " with replace by " + x);
		// Display calculated result
		process.stdout.write("\n Result " + result);
	}
}

function main()
{
	var task = new Interchange();
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	task.replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	task.replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	task.replaceDigit(71761, 7, 0);
}
main();

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
#    Python 3 program
#    Replacing one digit with other in an integer
class Interchange :
	def replaceDigit(self, number, digit, x) :
		if (x < 0 or x > 9 or digit < 0 or digit > 9) :
			#  When of given digit is not valid
			return
		
		n = number
		result = 0
		if (n < 0) :
			#  Make positive
			n = -n
		
		if (digit == 0 and n == 0) :
			#  When zero replace by x
			result = x
		else :
			#  Auxiliary variable
			temp = 0
			mul = 1
			while (n > 0) :
				#  Get last digit of n
				temp = n % 10
				if (temp == digit) :
					#  Include new digit
					result = (x * mul) + result
				else :
					result = (temp * mul) + result
				
				#  Remove last digit of n
				n = int(n / 10)
				mul = mul * 10
			
			if (number < 0) :
				result = -result
			
		
		#  Display given numbers
		print("\n Given Number : ", number, end = "")
		print("\n Digit ", digit ," with replace by ", x, end = "")
		#  Display calculated result
		print("\n Result ", result, end = "")
	

def main() :
	task = Interchange()
	#  Test A
	#  Given number    : 1323  
	#  Replacing digit : 3 
	#  Replaced by     : 9
	#  Result 1929
	task.replaceDigit(1323, 3, 9)
	#  Test B
	#  Given number    : -1161  
	#  Replacing digit : 1 
	#  Replaced by     : 3
	#  Result -3363
	task.replaceDigit(-1161, 1, 3)
	#  Test C
	#  Given number    : 71761  
	#  Replacing digit : 7 
	#  Replaced by     : 0
	#  Result 1061
	task.replaceDigit(71761, 7, 0)

if __name__ == "__main__": main()

Output

 Given Number :  1323
 Digit  3  with replace by  9
 Result  1929
 Given Number :  -1161
 Digit  1  with replace by  3
 Result  -3363
 Given Number :  71761
 Digit  7  with replace by  0
 Result  1061
#    Ruby program
#    Replacing one digit with other in an integer
class Interchange 
	def replaceDigit(number, digit, x) 
		if (x < 0 || x > 9 || digit < 0 || digit > 9) 
			#  When of given digit is not valid
			return
		end

		n = number
		result = 0
		if (n < 0) 
			#  Make positive
			n = -n
		end

		if (digit == 0 && n == 0) 
			#  When zero replace by x
			result = x
		else
 
			#  Auxiliary variable
			temp = 0
			mul = 1
			while (n > 0) 
				#  Get last digit of n
				temp = n % 10
				if (temp == digit) 
					#  Include new digit
					result = (x * mul) + result
				else
 
					result = (temp * mul) + result
				end

				#  Remove last digit of n
				n = n / 10
				mul = mul * 10
			end

			if (number < 0) 
				result = -result
			end

		end

		#  Display given numbers
		print("\n Given Number : ", number)
		print("\n Digit ", digit ," with replace by ", x)
		#  Display calculated result
		print("\n Result ", result)
	end

end

def main() 
	task = Interchange.new()
	#  Test A
	#  Given number    : 1323  
	#  Replacing digit : 3 
	#  Replaced by     : 9
	#  Result 1929
	task.replaceDigit(1323, 3, 9)
	#  Test B
	#  Given number    : -1161  
	#  Replacing digit : 1 
	#  Replaced by     : 3
	#  Result -3363
	task.replaceDigit(-1161, 1, 3)
	#  Test C
	#  Given number    : 71761  
	#  Replacing digit : 7 
	#  Replaced by     : 0
	#  Result 1061
	task.replaceDigit(71761, 7, 0)
end

main()

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
/*
    Scala program
    Replacing one digit with other in an integer
*/
class Interchange()
{
	def replaceDigit(number: Int, digit: Int, x: Int): Unit = {
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		var n: Int = number;
		var result: Int = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			var temp: Int = 0;
			var mul: Int = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		print("\n Given Number : " + number);
		print("\n Digit " + digit + " with replace by " + x);
		// Display calculated result
		print("\n Result " + result);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: Interchange = new Interchange();
		// Test A
		// Given number    : 1323  
		// Replacing digit : 3 
		// Replaced by     : 9
		// Result 1929
		task.replaceDigit(1323, 3, 9);
		// Test B
		// Given number    : -1161  
		// Replacing digit : 1 
		// Replaced by     : 3
		// Result -3363
		task.replaceDigit(-1161, 1, 3);
		// Test C
		// Given number    : 71761  
		// Replacing digit : 7 
		// Replaced by     : 0
		// Result 1061
		task.replaceDigit(71761, 7, 0);
	}
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061
/*
    Swift 4 program
    Replacing one digit with other in an integer
*/
class Interchange
{
	func replaceDigit(_ number: Int, _ digit: Int, _ x: Int)
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		var n: Int = number;
		var result: Int = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			var temp: Int = 0;
			var mul: Int = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		print("\n Given Number : ", number, terminator: "");
		print("\n Digit ", digit ," with replace by ", x, terminator: "");
		// Display calculated result
		print("\n Result ", result, terminator: "");
	}
}
func main()
{
	let task: Interchange = Interchange();
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	task.replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	task.replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	task.replaceDigit(71761, 7, 0);
}
main();

Output

 Given Number :  1323
 Digit  3  with replace by  9
 Result  1929
 Given Number :  -1161
 Digit  1  with replace by  3
 Result  -3363
 Given Number :  71761
 Digit  7  with replace by  0
 Result  1061
/*
    Kotlin program
    Replacing one digit with other in an integer
*/
class Interchange
{
	fun replaceDigit(number: Int, digit: Int, x: Int): Unit
	{
		if (x < 0 || x > 9 || digit < 0 || digit > 9)
		{
			// When of given digit is not valid
			return;
		}
		var n: Int = number;
		var result: Int = 0;
		if (n < 0)
		{
			// Make positive
			n = -n;
		}
		if (digit == 0 && n == 0)
		{
			// When zero replace by x
			result = x;
		}
		else
		{
			// Auxiliary variable
			var temp: Int ;
			var mul: Int = 1;
			while (n > 0)
			{
				// Get last digit of n
				temp = n % 10;
				if (temp == digit)
				{
					// Include new digit
					result = (x * mul) + result;
				}
				else
				{
					result = (temp * mul) + result;
				}
				// Remove last digit of n
				n = n / 10;
				mul = mul * 10;
			}
			if (number < 0)
			{
				result = -result;
			}
		}
		// Display given numbers
		print("\n Given Number : " + number);
		print("\n Digit " + digit + " with replace by " + x);
		// Display calculated result
		print("\n Result " + result);
	}
}
fun main(args: Array < String > ): Unit
{
	val task: Interchange = Interchange();
	// Test A
	// Given number    : 1323  
	// Replacing digit : 3 
	// Replaced by     : 9
	// Result 1929
	task.replaceDigit(1323, 3, 9);
	// Test B
	// Given number    : -1161  
	// Replacing digit : 1 
	// Replaced by     : 3
	// Result -3363
	task.replaceDigit(-1161, 1, 3);
	// Test C
	// Given number    : 71761  
	// Replacing digit : 7 
	// Replaced by     : 0
	// Result 1061
	task.replaceDigit(71761, 7, 0);
}

Output

 Given Number : 1323
 Digit 3 with replace by 9
 Result 1929
 Given Number : -1161
 Digit 1 with replace by 3
 Result -3363
 Given Number : 71761
 Digit 7 with replace by 0
 Result 1061

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