Answer / saddi srikanth

if x=14, y=18
x=x+y;
now x=14+18=32;
y=x-y;
now y=32-18=14;
now again y=14
x=x-y;
now x=32-14=18
final answer is:
x=18, and y=14
u can try this formule by taking any values for x and y.

Answer / satyaprakash tripathi

a=a-b;
b=a+b;
a=b-a;

Answer / avanthi kothakonda

i want to swapping without using any third variable and
opartion

Answer / mohit prakash saxena

2 answer will not work if the value of a is +ve and b is negative try for a=2 and b=-2

Answer / yasser

to swap in a single line..

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

Answer / swamy

class SwapDemo
{
int a,b;
void swap(int a,int b)
{
a=a+b;
b=a-b;
a=a-b;
}
public static void main(String args[])
{
SwapDemo s=new SwapDemo();
s.swap(12,14);
}
}

Answer / anoop pandey

a=a-b
b=a+b
a=b-a

Answer / mujtaba

answer 1 is the right 1:i.e

a=a+b;
b=a-b;
a=a-b;

Answer / mahesh

class swap_two_verible_use
{
public static void main(String args[])
{
int a=50;
int b=20;
System.out.println("A = "+a);
System.out.println("B = "+b);
System.out.println("-----------------");
System.out.println("After swiping");

a=a+b;
b=a-b;
a=a-b;
System.out.println("A = "+a);
System.out.println("B = "+b);
}
}

Answer / guest

a = a + b;
a = a - b;
b = b - a;

main() { char *cptr,c; void *vptr,v; c=10; v=0; cptr=&c; vptr=&v; printf("%c%v",c,v); }

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find A^B using Recursive function

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why array index always strats wuth zero?

2 Answers