In this tutorial you will learn about the Java Program to Swapping Two Numbers Using a Temporary Variable and its application with practical example.
In this tutorial, we will learn to create a Java program that will Swap Two Numbers Using a Temporary Variable using Java programming.
Prerequisites
Before starting with this tutorial we assume that you are best aware of the following Java programming topics:
- Java Operators.
- Basic Input and Output
- Class and Object.
- Basic Java programming.
What is meant by Swapping two numbers?
Swapping two numbers means exchanging the values of the Variables with each other. Example:=> variable a and b has values a= 5 and b=5 before swapping and after swapping there values became a=6 and b=5.
Java Program to Swapping Two Numbers Using a Temporary Variable
In our program we will swap two numbers value using third temporary variable . We would first declared and initialized the required variables. Next, we would prompt user to input the two values . Later we will Swap their value using temporary Variable.
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import java.util.Scanner; public class SwapNum { public static void main(String[] args) { int a,b,c; // declaring variables.. Scanner s = new Scanner(System.in); System.out.println("Enter the value of a="); a = s.nextInt(); // Taking values from user.. System.out.println("Enter the value of b="); b = s.nextInt(); c=a; // swapping values using third variable a=b; b=c; // Printing the swapped values System.out.println("Values After swaping are"); System.out.println("value of a = " + a); System.out.println("value of b = " + b); } } |
Output
In the above program, we have first declared and initialized a set variables required in the program.
- a= it will hold First value.
- b= it will hold second value.
And in the next statement user will be prompted to enter two values and which will be assigned to variable ‘a‘ and ‘b‘ respectively.
After that with the help of third(Temporary) c variable we will swap the actual values of a and b .
As you can see in above image first the value of ‘a’ is passes to variable ‘c’ (c=a) and in the next statement value of b passed to a (a=b),and at the end value of c passed to b (b=c).So in that manner using third variable we swapped value of two with third Temporary variable.
And Finally we will print the swapped values of Variables using Temporary(Third) variable.
