Question

How to swap two numbers in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int n1 = 12, n2 = 98;
 
        int temp = n1;
        n1 = n2;
        n2 = temp;
 
        System.out.println("n1 = " + n1);
        System.out.println("n2 = " + n2);
    }
}



/*
run:

n1 = 98
n2 = 12

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        int a = 12, b = 98;
  
        b = a + b;
        a = b - a;
        b = b - a;
  
        System.out.println("a = " + a);
        System.out.println("b = " + b);
    }
}
 
 
 
/*
run:
 
a = 98
b = 12
 
*/

 

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