Create swapelements.java

Author: smora015

swapelements.java

@@ -0,0 +1,40 @@
+/*
+  (c) Sergio Morales
+  CodeEval Challenge: Swap Elements
+  Date Solved: 12/20/13
+*/
+
+import java.io.*;
+
+public class Main {
+    public static void main (String[] args) throws java.io.IOException {
+        File file = new File(args[0]);
+        BufferedReader in = new BufferedReader(new FileReader(file));
+        
+        String line = "";
+        while (( line = in.readLine() ) != null) {
+            if (line.length() > 0) {
+                String[] numArray = line.substring(0, line.indexOf(":")).split(" ");
+                String[] swapArray = line.substring(line.indexOf(":")+1).split(",");
+                
+                for(int i = 0; i < numArray.length; ++i)
+                    System.out.print(numArray[i]+" ");
+                System.out.println();
+                // Print num length
+                //System.out.println(numArray.length);
+                for(int i = 0; i < swapArray.length; ++i) {
+                    String[] swaps = swapArray[i].split("-");
+                    Integer firstswap = Integer.parseInt(swaps[0].substring(1));
+                    Integer secondswap = Integer.parseInt(swaps[1]);
+                    String temp = numArray[firstswap];
+                    numArray[firstswap] = numArray[secondswap];
+                    numArray[secondswap] = temp;
+                }
+                
+                for(int i = 0; i < numArray.length; ++i)
+                    System.out.print(numArray[i]+" ");
+                System.out.println("\n");
+            }
+        }
+  }
+}