10/01/25
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Q)Java program to find if a number is a palindrome.

//Palindrome.java
import java.util.Scanner;
class Palindrome{
    public static void main(String args[]){
          Scanner scanner=new Scanner(System.in);
	      System.out.print("Enter the number:");
	      int n=scanner.nextInt();//232
	      int temp=n;//one more copy maintaining
	      int reverse=0;
              while(n!=0){
                 reverse=reverse*10+n%10;
	         n=n/10;
	      }
              if(temp==reverse){
	          System.out.println("It is a palindrome");
	      }
	      else{
	          System.out.println("It is not a palindrome");
	      }
    }
}
Q)What is the output of the following program?
class Break{
     public static void main(String args[]){
        for(int i=1;i<=10;i++){
          System.out.println(i);
          if (i==4){
             break;
          }//if 
       }//for

     }//main
}//class
Ans:
1
2
3
4
Q)What is the output of the following program.
class Continue{
     public static void main(String args[]){
        for(int i=1;i<=5;i++){
           if (i==4){
              continue;
           }//if 
	   System.out.println(i);
       }//for
     }//main
}//class
Ans:
1
2
3
5
Q)Explain about nested for loop.
=>Writing a for loop within the body of another for loop
is known as nesting of "for loop".

For eg
   for(int i=1;i<=3;i++) {
      for(int j=1;j<=10;j++){
         System.out.println(i+"\t"+j);
      }//inner for loop/nested for loop
   }//outer for loop.

=>For every iteration of outer for loop, all the iterations of inner
for loop will be completely executed.

Q)What is the output of the following program?
class NestedLoop{
  public static void main(String args[]){
	  for(int i=1;i<4;i++){
		  for(int j=1;j<=3;j++){
			  System.out.println(i+" "+j);
		  }//inner for loop
	  }//outer for loop
  }//main 
}//class

Ans:-
1     1
1     2
1      3
2      1

2      2

2      3

3   1
3    2

3    3