condensed contents

/**
 * Tries to combine this bucket with its buddy.  Done when
 * we would like to have two buckets with the same contents for
 * <insert reason here>
 *
 * @throws IOException
 */
private void combine() throws IOException {
        if (!this.canCombine()) {
            return; //not an exception?
        }

        Bucket buddy = this.index.loadBucket(this.findBuddy());

        index.setBucketAddr(this.findBuddy(), this.bucketAddr);

        //decrease depth of both buckets for <insert reason here>
        this.depth--;
        buddy.depth--;

        int[] combinedKeys = new int[this.maxNumKeys];

        for (int i=0; i< this.numKeys; i++){
            combinedKeys[keysSaved] = this.keys[i];
        }
        for (int i=0; i <buddy.numKeys; i++){
            combinedKeys[keysSaved] = buddy.keys[i];
        }

        //reset buckets and point both objects to combined contents
        this.numKeys = 0;
        buddy.numKeys = 0;
        this.keys = new int[this.maxNumKeys];
        buddy.keys = new int[this.maxNumKeys];

        this.storeData(this.index.getFilePointer());
        buddy.storeData(this.index.getFilePointer());

        for (int i = 0; i < combinedKeys.length; i++) {
            this.index.insert(combinedKeys[i]);
        }
}