While poking around I noticed that the remove implementation had a minor

inefficiency in that if the first record in a chain did not match it ended
up checking it once more prior to moving on to the next record in the chain.
Cleaned up to be similar to HashIntMap's remove implementation.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@1527 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/util/IntIntMap.java

@@ -109,31 +109,23 @@ public class IntIntMap
     protected int removeImpl (int key)
     {
 	int index = Math.abs(key)%_buckets.length;
-	Record rec = _buckets[index];
+        Record prev = null;
 
-	// if there's no chain, there's no object
-	if (rec == null) {
-	    return -1;
-	}
+        // go through the chain looking for a match
+        for (Record rec = _buckets[index]; rec != null; rec = rec.next) {
+            if (rec.key == key) {
+                if (prev == null) {
+                    _buckets[index] = rec.next;
+                } else {
+                    prev.next = rec.next;
+                }
+                _size--;
+                return rec.value;
+            }
+            prev = rec;
+        }
 
-	// maybe it's the first one in this chain
-	if (rec.key == key) {
-	    _buckets[index] = rec.next;
-	    _size--;
-	    return rec.value;
-	}
-
-	// or maybe it's an element further down the chain
-	for (Record prev = rec; rec != null; rec = rec.next) {
-	    if (rec.key == key) {
-		prev.next = rec.next;
-		_size--;
-		return rec.value;
-	    }
-	    prev = rec;
-	}
-
-	return -1;
+        return -1; // not found
     }
 
     public void clear ()