How to swap values between two variables without using a
third variable?
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 |
i want to open a helkp file that is txt file on link buttons click
Difference between abstract class and Interfaces in Java
9 Answers Nest, Persistent, Yantro Software,
Bonjour, svp je veut voir comment envoyer un mail en java et comment changer le droit d'accé d'un fichier en java: de lecture en lecture/écriture et merci d'avance ;)
What is easiest way to get the PL/i compiler,I didn't have found the compiler in my library. Is there any extra cost if we want to access the PL/1 programs?Actually we r having Mainframe rented training Ids
what is difference between sap and java ?
write the a cl program with the following specification A. Accept 2 parameters-date and date type B. if date type is J then convert date to *MDY format C. if date type is M convert date to *JUL format 4.send a program message with the value of converted date Please explain for each with coding?
HOW TO BREAK THE FIREWALL?
How many types of list exist in the HTML
How many ways we can fill a dataset in .Net
there are N number of matchboxes numbered 1...N.each matchbox contain various number of stick.Two player can alternatevely pick some amount of stick from the higest stick containing box . The player is condidered win if there is no stick after his move.Find the final move so that the move player win. Note:In case the number of stick is equal ,pick the stick from the higest numbered box. eg: 3 box contain stick as:1,1,1. if u take 1 stick from 3rd numbred box you will any how win the match.
5. How do you round the addition or subtraction of two numbers in assembler?
What r the attributes using in Win Runner?
0 Answers Tavant Technologies,