Added output file as command line argument and updated README, also added output files

Author: anshul1004

Luby.java

@@ -143,9 +143,9 @@ private static boolean verifyMIS(int[] ids, Set<Integer> misSet, List<List<Integ
 
     public static void main(String[] args) {
 
-        // Pass on input file through command line argument
-        if(args.length != 1) {
-            System.err.println("Error: Input file not provided in the argument!");
+        // Pass on input & output file through command line argument
+        if(args.length != 2) {
+            System.err.println("Error: Input and/or output file not provided in the argument!");
             System.exit(1);
         }
 
@@ -212,7 +212,7 @@ public static void main(String[] args) {
 
         // Write final output to a file
         try {
-            BufferedWriter output = new BufferedWriter(new FileWriter("output.txt"));
+            BufferedWriter output = new BufferedWriter(new FileWriter(args[1]));
 
             output.append("Number of rounds (phases): ").append(String.valueOf(rounds));
             output.newLine();

README

@@ -2,12 +2,12 @@ To implement the Luby's MIS algorithm, we have created a Luby.java file. To comp
 
 a) The algorithm will run on csgrads1 server.
 b) Make sure Java 1.8 or any other higher version is installed on the machine.
-c) The code takes one command-line argument i.e. input file. Make sure the input file is in the same directory with the code file.
+c) The code takes two command-line arguments i.e., input and output file names. Make sure the input file is in the same directory with the code file or make appropriate changes according to the file path in the command line argument.
 d) The input file contains 3 lines -
    1) n, number of vertices in the graph
    2) id array; a one-dimensional array of size n
    3) adjacency matrix (which is a symmetric n by n matrix). 1 represents if the nodes are adjacent to each other and 0 otherwise.
 e) First, to compile Luby.java use command "javac Luby.java".
 f) A Luby.class file will be created in the same directory after compiling the java file.
-g) Now, to run the above code, use command "java Luby inputfile" e.g. java Luby input1.txt
-h) An output file will be created in the same directory which contains the rounds (rounds took to generate the MIS), resultant MIS set and a verification message whether the generated MIS is correct or not.
+g) Now, to run the above code, use command "java Luby inputfile outputfile" e.g. java Luby input1.txt output1.txt
+h) An output file will be created which contains the rounds (rounds took to generate the MIS), resultant MIS set and a verification message whether the generated MIS is correct or not.

output1.txt

@@ -0,0 +1,4 @@
+Number of rounds (phases): 2
+MIS has the processes with IDs: 10 15 
+Verifying the MIS constructed is correct...
+Verified that the MIS constructed is indeed correct!

output2.txt

@@ -0,0 +1,4 @@
+Number of rounds (phases): 1
+MIS has the processes with IDs: 1 4 
+Verifying the MIS constructed is correct...
+Verified that the MIS constructed is indeed correct!

output3.txt

@@ -0,0 +1,4 @@
+Number of rounds (phases): 2
+MIS has the processes with IDs: 2 3 6 7 8 
+Verifying the MIS constructed is correct...
+Verified that the MIS constructed is indeed correct!