Java query

Question

Why is it showing 9 in result?
https://code.sololearn.com/c3q8zB7CVM9N/?ref=app

Answer 1

Your method dont test really if a number is prime or not because it print to first test case the number checking if its divisible by 2 and if not print the number (in practice it print odd numbers)... Futhermore in the inner loop you use the i var than make more confusion and problems... Try this code :

for(int i =a;i<=b;i++){
boolean isPrime= true;
for (int j=2;j<=i/2;j++){
if (i%j==0){
isPrime= false;
break;
}
}
if(isPrime)
System.out.print(i +" ");
}