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Challenges

Comments on Small integer swapping

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Small integer swapping

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−4

In this simple challenge, create a short program that takes 2 ints as input, output them, swap their places, then output them again. Those 2 integers can't be the same number. The program with the shortest solution wins! Loopholes are banned in this challenge.

An example C program for the challenge (mostly ungolfed):

#include <stdio.h>

int main() {
	int x, y;
	scanf("%i %i", &x, &y);
	printf("%i %i", x, y);
	int z = x;
	x = y;
	y = z;
	printf("%i %i", x, y);
}

You can make 2 answers in one post: 1 with output swapping, and 1 with variable swapping.

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1 comment thread

How is the mentioned loophole a loophole? (6 comments)
How is the mentioned loophole a loophole?
user‭ wrote over 3 years ago

How is the mentioned loophole a loophole?

General Sebast1an‭ wrote over 3 years ago

user‭ So you don't get it? It's simple, the integers weren't swapped at all, only changed place in the output function.

user‭ wrote over 3 years ago

What's the difference?

Unrelated String‭ wrote over 3 years ago

That's what we like to call an "unobservable requirement". Doesn't help that it's one that makes the challenge beyond trivial for some languages (because there's only one approach they're allowed to use) and completely impossible for others, depending on how you interpret and enforce it...

user‭ wrote over 3 years ago

But what's the difference between swapping and changing places? I'm still confused lol

Quintec‭ wrote over 3 years ago

I'm closing this question until this is resolved. (FWIW, I don't understand this either.)