Question

: Given a specific number, consider all the numbers from 1 to given number and calculate how many of them are odd, even and multiples of 3. For instance:
number = 9
then consider {1, 2, 3, 4, 5, 6, 7, 8, 9}
count of even numbers = 4   // 2, 4, 6, 8
count of odd numbers = 5   // 1, 3, 5, 7, 9
count of multiples 3 = 3       // 3, 6, 9
note. You do not have to list all the numbers, you just need to count how many.
For the problem above, create the pseudocode, trace table, java code, screenshot of output

Answer 1

import java.util.Scanner;

public class NumberCount {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       System.out.print("Enter number: ");
       int n=sc.nextInt();
       int evenCount=0,oddCount=0,mulitplesThree=0;
       for(int i=1;i<=n;i++) {
           if(i%2==0)
               evenCount++;
           else
               oddCount++;
           if(i%3==0)
               mulitplesThree++;
       }
       System.out.println("Count of even numbers = "+evenCount);
       System.out.println("Count of odd numbers = "+oddCount);
       System.out.println("Count ofmulitples 3 = "+mulitplesThree);
      
   }
}

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