How to swap two String values without using a third variable?

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How to swap two String values without using a
third variable?

Question Posted / shyambaishya

8 Answers
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How to swap two String values without using a third variable?..

Answer / shyambaishya

Using 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 ?

49 Yes

10 No

How to swap two String values without using a third variable?..

Answer / parthag

In C#, C sharp

string str1 = "First";
string str2 = "Second";
str1 = string.Concat(str1, str2);
str2 = str1.Replace(str2,"");
str1 = str1.Replace(str2,"");

Is This Answer Correct ?

5 Yes

0 No

How to swap two String values without using a third variable?..

Answer / badar awan

public class B
{
public static void main(String [] args)
{
String a = "Badar" ;
String b ="Asad";
a= a+b;
b = a.substring(0,(a.length()-b.length()));
a = a.substring(b.length(),(a.length()));
System.out.println("a == "+ a);
System.out.println("b == "+ b);
}
}

Is This Answer Correct ?

9 Yes

5 No

How to swap two String values without using a third variable?..

Answer / parthag

In C#

string str1 = "First";
string str2 = "Second";
str1 = string.Concat(str1, str2);
str2 = str1.Replace(str2,"");
str1 = str1.Replace(str2,"");

Is This Answer Correct ?

2 Yes

0 No

How to swap two String values without using a third variable?..

Answer / andy

'Swapping two strings in vb.net
Private Function SwappStrings(ByVal str1 As String,
ByVal str2 As String) As String
str1 = str1 + str2
str2 = str1.Substring(0, (str1.Length -
str2.Length))
str1 = str1.Substring(str2.Length)
SwappStrings = "A is : " & str1.ToString & "And B
is : " & str2.ToString
End Function

Is This Answer Correct ?

6 Yes

6 No

How to swap two String values without using a third variable?..

Answer / bharat

import java.util.Scanner;

public class Swap {

/**
* @param args
*/

public static void main(String[] args) {
// TODO Auto-generated method stub
int a, b;
System.out.println("Enter a and b");
Scanner in = new Scanner(System.in);

a = in.nextInt();
b = in.nextInt();
System.out.println("Befor Swapinng :" + "a : " + a + "\t" + "b :" + b);
b = a + b;
a = b - a;
b = b - a;
System.out.println("a : " + a + "\t" + "b :" + b);

}

}

Is This Answer Correct ?

0 Yes

0 No

How to swap two String values without using a third variable?..

Answer / gayitri91

import java.io.*;

class Swap_2_Strings
{
String s1,s2;
DataInputStream dis=new DataInputStream(System.in);

Swap_2_Strings()
{
try
{
int n,m;
System.out.println("Enter 2 strings");
s1=dis.readLine();
s2=dis.readLine();
n=s1.length();
m=s2.length();
s1=s1+s2;
s2=s1.substring(0,n);

s1=s1.substring(n,n+m);

System.out.println("s1="+s1+"\n s2="+s2);

}
catch(IOException x)
{
System.out.println(x);
}
}
public static void main(String arg[])
{
Swap_2_Strings s=new Swap_2_Strings();
}
}