Answer / sachin patil

a = 5;
b = 10;
a = a+b;
b = a-b;
a = a-b;

Answer / vishal gupta

well, use math:

x=5;
y=7;
x = x * y;
y = x / y;
x = x / y;

And the numbers have been swapped without the use of an
extra variable. I hope it helped.

Answer / guest

another way is using bitwise XOR (^).

a=9; //a=1001
b=5; //b=0101

a=a^b; //a=1100
b=a^b; //b=1001
a=b^a; //a=0101

Answer / a.g.dhivyalakshmi

//swaping of 2 numbers without using temp variable
//a=5 & b=6
a=a+b; //a=30
b=a-b; //b=5
a=a-b; //a=6

//Thus two numbers are swapped

// or
//a=5 & b=6
a=a*b; //a=30
b=a/b; //b=5
a=a/b; //a=6

//Thus two numbers are swapped

Answer / raja

if a=10& b=20

a=a+b //a=30
b=a-b //b=10
a=a-b //a=20

finally we got a=20,b=10

Answer / prasannaroy

a=10;
b=20;
b=a+b-(a=b);

Answer / vaibhav meena

Its simple:
For Integer Values

A^=B^=A

and with arithmetic operators :

All the above answers are right

Answer / pranav

//swaping of 2 numbers without using temp variable
//a=5 & b=6
a=a+b; //a=30
b=a-b; //b=5
a=a-b; //a=6

Answer / arundhati

a^=b^=a^=b;

Answer / lucky

All the above ans. are nice.
I proved my "INDIA" in which these comuter logicmind are
living.........

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