Question

IN JAVA 1. Create a program that prompts the user for an integer and then displays a message indicating whether or not the number is a perfect square. This can be determined by finding the square root of a number, truncating it (by casting the double result), and then squaring that result 2. Write a program that prompts the user for two numbers. The first number is a minimum value and the second number is a maximum value. RandomNum then displays and integer between the min and max values entered by the user.

Answer 1

import java.util.Scanner;
class PerfectSquare
{
   public static void main(String args[])
   {
       Scanner input = new Scanner(System.in);
       //prompt user to enter a number
       System.out.println("\nEnter a number: ");
       int n = input.nextInt();
       //findout squar root of the given number
       int temp=(int)Math.sqrt(n);
       //if temp^2 is equal to user entered number
       //perfect square
       if(Math.pow(temp,2)==n)
           System.out.println("\nPerfect Square\n");
       //else not perfect number
       else
           System.out.println("\nNot perfect square\n");
   }
}

Users Sudoku\Documents javac PerfectSquare.java Users Sudoku Documents java PerfectSquare nter a number erfect Square Users Sudoku Documents java PerfectSquare nter a number ot perfect square

//Random number by using Random class
import java.util.Scanner;
import java.util.Random;
public class RandomNumber
{
   public static void main(String args[])
   {
           Scanner input = new Scanner(System.in);
           Random rand = new Random();
           //prompt user to enter a min number
           System.out.println("\nEnter a min number: ");
           int min = input.nextInt();
           //prompt user to enter a max number
           System.out.println("\nEnter a max number: ");
           int max = input.nextInt();
           //generating random number in given range
           int random = rand.nextInt(max)+min;
           //displaying to user
           System.out.println("Random number "+random);
   }
}

C:NUsers Sudoku Documents java RandomNumber Enter a min number: Enter a max number: Randon number 1 C:NUsers Sudoku Documents java RandomNumber Enter a min number: Enter a max number: Random number 2