Comments on: Swap two variables using XOR http://betterexplained.com/articles/swap-two-variables-using-xor/ Learning shouldn't hurt. Let's share the insights that made difficult ideas click. Mon, 7 Jul 2008 00:00:23 +0000 http://wordpress.org/?v=2.0 by: xor swap « Blog do Lameiro http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-98186 Sat, 08 Dec 2007 03:09:47 +0000 http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-98186 [...] E aí pronto, suas variáveis estão invertidas. Pode acreditar (ou ler uma explicação bem mais detalhada). Legal né? [...] […] E aí pronto, suas variáveis estão invertidas. Pode acreditar (ou ler uma explicação bem mais detalhada). Legal né? […]

]]> by: Kalid http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-93259 Wed, 28 Nov 2007 03:21:31 +0000 http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-93259 Hi zezima, thanks for the info! That's a neat trick too -- you "combine" a and b in a similar way, and extract them as well. One thing to watch out for is arithmetic overflow. Hi zezima, thanks for the info! That’s a neat trick too — you “combine” a and b in a similar way, and extract them as well.

One thing to watch out for is arithmetic overflow.

]]> by: zezima http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-93248 Wed, 28 Nov 2007 03:11:32 +0000 http://betterexplained.com/articles/swap-two-variables-using-xor/#comment-93248 there is another way, tho i doubt if it's faster, a=10; b=15; a=a+b;//a=25 b=15 b=a-b; //a=25 b=10 a=a-b; //a=15 b=10, swapped there is another way, tho i doubt if it’s faster,

a=10;
b=15;

a=a+b;//a=25 b=15
b=a-b; //a=25 b=10
a=a-b; //a=15 b=10, swapped

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