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Java Program to Swap two Strings Without Using any Third Variable

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Deepika Sahu answered on December 17, 2022 Popularity 7/10 Helpfulness 4/10

answer Java Program to Swap two Strings Without Using any Third Variable

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Java Program to Swap two Strings Without Using any Third Variable

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// Java program to swap two strings without using a temporary
// variable.
import java.util.*;
 
class Swap
{   
    public static void main(String args[])
    {
        // Declare two strings
        String a = "Hello";
        String b = "World";
         
        // Print String before swapping
        System.out.println("Strings before swap: a = " +
                                       a + " and b = "+b);
         
        // append 2nd string to 1st
        a = a + b;
         
        // store initial string a in string b
        b = a.substring(0,a.length()-b.length());
         
        // store initial string b in string a
        a = a.substring(b.length());
         
        // print String after swapping
        System.out.println("Strings after swap: a = " +
                                     a + " and b = " + b);       
    }   
}

Popularity 7/10 Helpfulness 4/10 Language java

Source: www.geeksforgeeks.org

Tags: any java swap using

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Contributed on Dec 24 2022

Deepika Sahu

0 Answers Avg Quality 2/10

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Java Program to Swap Two Strings

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/**
 * Java Program to Swap Two Strings without Third String Variable
 * @author javaguides.net
 *
 */
public class SwapTwoStrings {
    public static void main(String[] args) {
        String s1 = "javaguides";

        String s2 = "javadesignpatterns";

        display("Before Swapping :", s1, s2);

        // Swapping starts

        s1 = s1 + s2;

        s2 = s1.substring(0, s1.length() - s2.length());

        s1 = s1.substring(s2.length());

        // Swapping ends

        System.out.println("After Swapping :");
        display("After Swapping :", s1, s2);
    }

    private static final void display(String str, String s1, String s2) {
        System.out.println(str);
        System.out.println("s1 : " + s1);
        System.out.println("s2 : " + s2);
    }
}

Popularity 7/10 Helpfulness 4/10 Language java

Source: www.javaguides.net

Tags: swap java

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Contributed on Dec 17 2022

Deepika Sahu

0 Answers Avg Quality 2/10

java program to swap 2 numbers without using 3rd variable

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java program to swap 2 numbers without using 3rd variable

    import java.util.*;  
    class Swap   
    {  
        public static void main(String a[])   
        {   
            System.out.println("Enter the value of x and y");  
            Scanner sc = new Scanner(System.in);  
            /*Define variables*/  
            int x = sc.nextInt();  
            int y = sc.nextInt();  
            System.out.println("before swapping numbers: "+x +" "+ y);  
           /*Swapping*/  
            x = x + y;   
            y = x - y;   
            x = x - y;   
            System.out.println("After swapping: "+x +"  " + y);   
        }   
    }

Popularity 6/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java swap using numbers

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Contributed on Oct 09 2023

Francis A

0 Answers Avg Quality 2/10

Java Program to Swap two Strings Without Using any Third Variable

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Java Program to Swap two Strings Without Using any Third Variable

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Java Program to Swap Two Strings

java program to swap 2 numbers without using 3rd variable

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