public MemcachedNode next() {
      try {
        return nodes[next];
      } finally {
        computeNext();
      }
    }
Construct an ArraymodNodeLocator over the given array of nodes and using
the given hash algorithm.

@param n the array of nodes
@param alg the hash algorithm
src/main/java/net/spy/memcached/ArrayModNodeLocator.java