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Java Java Objects (Retired) Delivering the MVP Determining if It Is Solved

Posted by Jesús Camarena
Jesús Camarena
7,280 Points

Determining if it is Wrong: End Video Question. ( > VS. != )

So, for the question at the end of the video I initially went with != between remainingTries and Zero, I got the answer wrong. Tried it with > and passed. Now, I over think things through and I find both to be acceptable answers, but I can not find a reason why != would be wrong to use. Or am I wrong? Just need someone else's perspective.

1 Answer

jcorum
jcorum
71,830 Points

If you can guarantee that remainingTries will never be negative, then, yes, they would have the same effect.

Here's an example of what could go wrong with !=:

      int x = 5;
      while (x != 0) {
         System.out.println(x);
         x = x - 2;
      }

(x != 0) will cause an infinite loop, where (x > 0) would not.

Jesús Camarena
Jesús Camarena
7,280 Points

Ah, I can see how that may be a problem down the road. Thank you for sharing your time and thoughts. :)