a ^=b;
b ^=a;
a ^=b;
In C Programming, ^ stands for Exclusive OR.
Lets expand this expression and denote an and bn for new values of a and b then,
bn = b xor ( a xor b) = b xor a xor b = a
an = a xor ( b xor a) = a xor b xor a = b
Swapping variables without dummy
This seems to be Old Programming School Practise. Came to know from Ariya.
a ^=b;
b ^=a;
a ^=b;
In C Programming, ^ stands for Exclusive OR.
Lets expand this expression and denote an and bn for new values of a and b then,
bn = b xor ( a xor b) = b xor a xor b = a
an = a xor ( b xor a) = a xor b xor a = b
a ^=b;
b ^=a;
a ^=b;
In C Programming, ^ stands for Exclusive OR.
Lets expand this expression and denote an and bn for new values of a and b then,
bn = b xor ( a xor b) = b xor a xor b = a
an = a xor ( b xor a) = a xor b xor a = b
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