Difference between revisions of "Interview Questions"

Revision as of 23:19, 3 April 2012

n! Multiplicative

@@ Line 19: / Line 19: @@
 ==PHP==
 [[PHP interview]]
-==Swap 2 numbers in one line==
-<pre>
-//swap
-$a=10;
-$b=20;
-$a=$a+$b-($b=$a);
-echo $a." and ". $b."\n";
-// output 20 and 10
-$a^=$b^=$a^=$b; //This has a bug. You cannot do things like this $a^=$a^=$a^=$a
-echo $a." and ". $b;
-//output 10 and 20
-</pre>