Merge pull request #36 from Ln11211/swap

Created SWAP program

Author: SarthakKeshari

Basic Codes/swap2.java

@@ -0,0 +1,32 @@
+//A program to swap two numbers without using another variable.
+import java.io.*;
+class swap2
+{
+    void swap(int x, int y)
+    {
+        if(x>=0 && y>=0) //If the numbers are both positive..
+        {
+            x=x+y;
+            y=x-y;
+            x=x-y;
+        }
+        else //if any of the number is negative or both are negative..
+        {
+            x=x+y;
+            y=y-x;
+            x=x+y;
+            y=-y;
+        }
+        System.out.println("After swap \n"+"x= "+x+"\ny= "+y);
+    }
+    public static void main(String args[])throws IOException
+    {
+        InputStreamReader inp=new InputStreamReader(System.in);  
+        BufferedReader br=new BufferedReader(inp);
+        int x=Integer.parseInt(br.readLine());  // Accepting the numbers and storing them
+        int y=Integer.parseInt(br.readLine());
+        System.out.println("Before swap \n"+"x= "+x+"\ny= "+y);
+        swap2 obj=new swap2();
+        obj.swap(x,y);
+    }
+}