Thursday, July 21, 2011

Java puzzler - How many integers are in the box ?

This is most basis Java Puzzler. Question is, how will the output look like ?
  • Will it print out powers of 10 starting from 1 ending at 10000000.
  • Or will it print just 1.
  • Or will it print any other number.
  • Or will it loop forever.
  • Or anything else.
package sk.adino.puzzlers;

import static org.junit.Assert.*;
import org.junit.Test;

public class AutoboxingTest {

	@Test
	public void test() {
		int i=1;
		while(i<10000000) {
			System.out.println("value:" + i);
			Integer j=i;
			Integer k=i;
			if (j==k){
				i=i*10;
			}else break;
		}
		assertEquals(i,1000);
	}
}

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