Groovy example source code file (hash2.java)

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Java - Groovy tags/keywords

hashmap, hashmap, iterator, iterator, string, string, util, val, val

The Groovy hash2.java source code

// $Id: hash2.java,v 1.1 2004-05-23 05:50:10 bfulgham Exp $
// http://www.bagley.org/~doug/shootout/

import java.util.*;

class Val {
    int val;
    Val(int init) { val = init; }
}

public class hash2 {
    public static void main(String args[]) {
	int n = Integer.parseInt(args[0]);
	HashMap hash1 = new HashMap(10000);
	HashMap hash2 = new HashMap(n);

	for(int i = 0; i < 10000; i++)
	    hash1.put("foo_" + Integer.toString(i, 10), new Val(i));
	for(int i = 0; i < n; i++) {
	    Iterator it = hash1.entrySet().iterator();
	    while(it.hasNext()) {
			Map.Entry h1 = (Map.Entry)it.next();
			String key = (String)h1.getKey();
			int v1 = ((Val)h1.getValue()).val;
			if (hash2.containsKey(key))
				((Val)hash2.get(key)).val += v1;
			else
				hash2.put(key, new Val(v1));
	    }
	}

	System.out.print(((Val)hash1.get("foo_1")).val    + " " +
	                 ((Val)hash1.get("foo_9999")).val + " " +
	                 ((Val)hash2.get("foo_1")).val    + " " +
	                 ((Val)hash2.get("foo_9999")).val + "\n");
    }
}