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public static void main(String[] args) {
int x = 10;
int y = 20;
x=x+y;
y=x-y;
x=x-y;
System.out.println("x:"+x+" y:"+y);
}
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// SWAPPING WITHOUT USING THIRD VARIABLE
#include<stdio.h>
int main()
{
int a=10, b=20;
printf("Before swap a=%d b=%d",a,b);
a=a+b;//a=30 (10+20)
b=a-b;//b=10 (30-20)
a=a-b;//a=20 (30-10)
printf("\nAfter swap a=%d b=%d",a,b);
return 0;
}
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// Another approach, that doesn't requires to create a third variable,
// but requires more computation
int a = 7;
int b = 2;
a = a ^ b;
b = a ^ b;
a = a ^ b;
// ^ means XOR
// if you want a more concise code, you can do
// a ^= b;
// b ^= a;
// a ^= b;
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#include <iostream>
using namespace std;
int main()
{
int a=5, b=10;
cout<<"Before swap a= "<<a<<" b= "<<b<<endl;
a=a*b; //a=50 (5*10)
b=a/b; //b=5 (50/10)
a=a/b; //a=10 (50/5)
cout<<"After swap a= "<<a<<" b= "<<b<<endl;
return 0;
}
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public static void main(String[] args) {
int x = 10;
int y = 20;
int temp;
temp = x;
x = y;
y = temp;
System.out.println("x:"+x +" y:" + y);
}
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using System;
class MainClass {
public static void Main (string[] args) {
int num1 = int.Parse(Console.ReadLine());
int num2 = int.Parse(Console.ReadLine());
num1 = num1 + num2;
num2 = num1 - num2;
num1 = num1 - num2;
Console.WriteLine("After swapping: num1 = "+ num1 + ", num2 = " + num2);
Console.ReadLine();
}
}
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X= 25 (First number), Y= 23 (second number)
Swapping Logic:
X = X + Y = 25 +23 = 48
Y = X - Y = 48 - 23 = 25
X = X -Y = 48 - 25 = 23
and the numbers are swapped as X =23 and Y =25.
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var a=window.prompt('enter a number')var b=window.prompt('enter a number')var a=a+b;var b=a-b;var a=a-b;console.log ("value of a is",a);console.log('value of b is',b);