Question

WRITE A BLUE J PROGRAM To swap two numbers using third variable

Sample input :a=23,b=56

Sample output :a=56,b=23
PLEASE ANSWER IT FAST

Answer 1

Answer:

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Explanation:

X= 25 (First number), Y= 23 (second number)

Swapping Logic:

X = X + Y = 25 +23 = 48

Y = X - Y = 48 - 23 = 25

X = X -Y = 48 - 25 = 23

and the numbers are swapped as X =23 and Y =25.  

Algorithm

STEP 1: START

STEP 2: ENTER x, y

STEP 3: PRINT x, y

STEP 4: x = x + y

STEP 5: y= x - y

STEP 6: x =x - y

STEP 7: PRINT x, y

STEP 8: END

Java Program

import java.util.*;  

class Swap    

{  

   public static void main(String a[])    

   {    

       System.out.println("Enter the value of x and y");  

       Scanner sc = new Scanner(System.in);  

       /*Define variables*/  

       int x = sc.nextInt();  

       int y = sc.nextInt();  

       System.out.println("before swapping numbers: "+x +" "+ y);  

      /*Swapping*/  

       x = x + y;    

       y = x - y;    

       x = x - y;    

       System.out.println("After swapping: "+x +"  " + y);    

   }    

}  

Output:

Enter the value of x and y

23  43

before swapping numbers: 23  43

After swapping:  43  23

Answer 2

Answer:

check the image for solution

Explanation:

main algorithm is

t= x;

x=y;

y=t;

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