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POhow to store file entries into adjacency list
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  1. POhow to store file entries into adjacency list
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    copied!<p>I have an adjacency matrix of a graph in a file.how to store this adjacency matix in a two dimensional matrix my input file looks like</p> <pre><code>e 1 36 e 2 45 e 3 74 e 4 18 e 5 36 e 6 74 e 6 45 e 6 136 e 6 36 e 6 21 e 6 18 e 7 18 e 7 116 e 7 74 e 7 99 e 7 81 e 7 135 </code></pre> <p>i need a output as adjacency list:</p> <pre><code>1--&gt;36 2--&gt;45 3--&gt;74 4--&gt;18 5--&gt;36 6--&gt;74--&gt;45--&gt;136--&gt;36--&gt;21--&gt;18 7--&gt;18--&gt;116---&gt;74--&gt;99--&gt;81--&gt;135 </code></pre> <p><br/></p> <pre><code> import java.util.Scanner; import java.io.File; import java.io.FileNotFoundException; import java.util.StringTokenizer; public class Graph1 { public static void main(String[] args) throws FileNotFoundException { int linecount = 0, ec = 0; String nbin = null, cbin = null; int[][] data = null; String e = "e"; System.out.println("Graph Coloring Algorithm Test\n"); Scanner sc = new Scanner(System.in); System.out.print("Enter graph input file name: "); String newfile = sc.nextLine() + ".txt"; File file = new File(newfile); Scanner scan = new Scanner(file); while ((scan.hasNext())) { StringTokenizer t = new StringTokenizer(scan.nextLine()); if (t.nextToken().equals(e)) { ec++; nbin = scan.nextInt(); cbin = scan.nextInt(); } linecount++; for (int i = 0; i &lt; 5; ++i) for (int j = 0; j &lt; 5; ++j) { { data[nbin][cbin] = 1; } } } for (int i = 0; i &lt; 5; ++i) for (int j = 0; j &lt; 5; ++j) { { System.out.print(data[i][j]); } } } } </code></pre> <p>this code is having error .how to convert the string token to integer I how can I accept a line from file which starts with <strong>e</strong> and add it to the adjacency list.</p>
 

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