just a small doubt.
if x=10 and y=20
thn wht wud b the value of (x ^ y)?
acc to meit has to be 1 bt if the value is 1 , thn how wud the method
using XOR operations work?.plz xplain
On Mon, Jun 13, 2011 at 3:18 AM, KK kunalkapadi...@gmail.com wrote:
@kunal
Actually its not same
On 06/13/2011 05:22 PM, tech rascal wrote:
just a small doubt.
if x=10 and y=20
thn wht wud b the value of (x ^ y)?
acc to meit has to be 1 bt if the value is 1 , thn how wud the
method using XOR operations work?.plz xplain
On Mon, Jun 13, 2011 at 3:18 AM, KK
@kunal
Actually its not same value its the same variable and it arises only
if u code the given way(and some people do it this way)
void swap(int a, int b)
{
a ^= b ^= a ^= b;
}
now we have
int a = 10;
swap(a, a)
This will set a's value to 0...and this happens while sorting arrays
It wont give correct answer when u pass same values of a and b and
such conditions arises in sorting
--
***
Kunal Kapadia
Computer Science and Engineering
B.Tech 2nd yr
NIT Trichy
***
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You received this
can u pls explain the overflow and underflow in +- approach
On Jun 11, 8:58 am, Wladimir Tavares wladimir...@gmail.com wrote:
Swapping two variables without using a temporary variable using the + and -:
x = a;
y = b;
x = x + y / / x = a + b;
y = x - y / / y = a + b-b = a;
x = x - y / / x
Well, on pod, this is an alternative to swapping two variables with a
third temporary, but be careful with objects!
It won't work on all objects and in C++0x there is the move for this
purpose.
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Hers's another one line solution for swapping two variables a and b
a=b+a-(b=a)
On Sat, Jun 11, 2011 at 2:55 PM, Andreas Hahn www.gal...@googlemail.comwrote:
Well, on pod, this is an alternative to swapping two variables with a
third temporary, but be careful with objects!
It won't work on
