Interested to Buy Any Domain ? << Click Here >> for more details...
How to swap values between two variables without using a
third variable?
- 24 Answers
- 49648 Views
- HCL, TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / banti sharma
main()
{
int a,b;
a=a+b;
b=a-b;
a=a-b;
}
in Answer of pinky she has taken a variale ia which is not
used in program. He He He
| Is This Answer Correct ? | 88 Yes | 16 No |
Answer / shobha
int x=10,y=20;
x=x+y (10+20=30)
y=x-y (30-20=10)
x=x-y (30-10=20)
x=20,y=10
x and y vales are swaped.
| Is This Answer Correct ? | 51 Yes | 12 No |
Answer / mona
swap(int var1,int var2)
{
var1=var1+var2;
var2=var1-var2;
var1=var1-var2;
}
thanks for asking.
| Is This Answer Correct ? | 45 Yes | 13 No |
Answer / siva
You can also do it with the exclusive or bitwise operator...
a = a ^ b;
b = a ^ b; ((a ^ b) ^ b == a)
a = a ^ b; ((a ^ b) ^ a == b)
| Is This Answer Correct ? | 27 Yes | 8 No |
Answer / gourab varma
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf("enter value of a and b");
scanf("%d%d", &a,&b);
a=a+b;
b=a-b;
a=a-b;
printf("the value of a=%d\n the value of b is=%d", a, b);
getch();
}
| Is This Answer Correct ? | 8 Yes | 1 No |
How to swap two String values without using a
third variable?
In Java::
=========
String s1 = "Shyam Sundar Baishya" ;
String s2 ="Dilip Kumar";
System.out.println("Before swapping ............");
System.out.println("s3 == "+s1);
System.out.println("s4 == "+s2);
s1= s1+s2;
System.out.println("....................");
System.out.println("After swapping ............");
s2 = s1.substring(0,(s1.length()-s2.length()));
s1 = s1.substring(s2.length(),(s1.length()));
System.out.println("s3 == "+ s1);
System.out.println("s4 == "+ s2);
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / pushpendra
int x=10,y=20;
x=x+y (10+20=30)
y=x-y (30-20=10)
x=x-y (30-10=20)
x=20,y=10
x and y vales are swaped.
| Is This Answer Correct ? | 13 Yes | 9 No |
Answer / sriram
Hey guys, what about swaping variables contains string
values? All of your solutions will suck... Try this and swap
any datatype without third variable... Happy Sensible Coding..
$v = 'sriram';
$u = 'lakshmi';
$v .= $u;
$u = substr($v,0,(strlen($v) - strlen($u)));
$v = substr($v,(strlen($v) - strlen($u)-1), strlen($v));
echo 'u = ' . $u .'<br>';
echo 'v = ' . $v;
| Is This Answer Correct ? | 8 Yes | 4 No |
Answer / vinodkumar
main()
{
int a=10,b=8;
void swap(a,b)
/*it does not return any value because return statement can
return only one value at a time*/
{
a=a+b;/*a=10+8,a=18*/
b=a-b;/*b=18-8,b=10*/
a=a-b;/*a=18-10,a=8*/
printf("after swaping a= %dand b=%d",&a,&b);
}
getch()
}
| Is This Answer Correct ? | 5 Yes | 2 No |
Why multiple inheritance is removed in java?
What are two of your strengths that you will bring to our QA/testing team?
What is procedural oriented language language..? give some examples of this language....?
When you?re running a component within ASP.NET, what process is it running within on Windows XP? Windows 2000? Windows 2003?
Hey this is venkatesh.Please can any body tell me what is SFLNXTCHG?where we use this keyword?what perpuse we use this?Can you tell me in real time senario with example? And in 7 specification(RPG/400)what is the mandatory specification using programs?
What is Big-O notation?
Info for guidewire documents and interview questions
how sap is different from other software ?
you have a computer with 80GB hard disk and ubuntu 8.04 is installed on entire hard disk.now you have to create a seprate partition for windows OS and install win XP as dual boot.write down the steps involved along with the commands
1 Answers Anand Group, Indian Navy, TCS,
what is the use MDM(Master Data Management)and meaning
What is the first message line that any language learning prints on the screen? and why?
10.Define filters,binary to hexadecimal,hexadecimal to decimal?
C 
