035 - Sum Odds in Range

You are given two inputs:

int num1; int num2;

 

You can assume that the following:

• num2 > num1 ==> TRUE

You are to write a program that will calculate and print out the SUM OF ODD numbers in between num1 and num2 inclusive. Your output should all be on one line, separated by spaces. Sample input/output:

#1: 3 #2: 11 Output: 35   #1: 4 #2: 20 Output: 96   #1: -2 #2: 6 Output: 8

---

Solution

import java.util.*;
 
public class Main {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.print("#1: ");
        int num1 = s.nextInt();
        System.out.print("#2: ");
        int num2 = s.nextInt();
        //start on line 11
        int cnt=num1;
        int sum=0;
        if(num1%2==0) {cnt+=1;}
        while(cnt<=num2) {
            sum+=cnt;
            cnt+=2;        
      }
        System.out.println(sum);
    }
}