Create SwapElements.java

Author: SedaKunda

Easy-Level/SwapElements.java

@@ -0,0 +1,36 @@
+//You are given a list of numbers which is supplemented with positions that have to be swapped.
+
+import java.io.*;
+import java.util.*;
+        public class Main {
+            public static void main (String[] args) throws IOException {
+                File file = new File(args[0]);
+                BufferedReader br = new BufferedReader(new FileReader(file));
+                   String line;
+                   while ((line = br.readLine()) != null) { 
+                	   String[] a = line.split(":");
+                	   String[] b = a[0].split(" ");
+                	   String[] c = a[1].replace(" ", "").split(",");
+                	   for (String s: new Main().swap(b, c)) {
+                		   System.out.print(s + " ");
+                	   }
+                	   System.out.println();              	  
+                   }
+                   br.close();
+            }
+            
+            String[] swap(String[] s, String[] h) {
+            	String g;
+            	for (int i = 0; i < h.length; i++) {
+            		g = h[i];            	
+	            	String[] d = g.split("-");
+	            	int a = Integer.parseInt(d[0]);
+	            	int b = Integer.parseInt(d[1]);
+	            	String c = s[a];
+	            	String e = s[b];
+	            	s[a] = e;
+	            	s[b] = c;
+            	}
+            	return s;
+            }
+        }