Method findMax

deps/v8/tools/splaytree.mjs:145–152

* @return {SplayTreeNode} Node having the maximum key value.

(opt_startNode)

   * @return {SplayTreeNode} Node having the maximum key value.
   */
  findMax(opt_startNode) {
    if (this.isEmpty()) return null;
    let current = opt_startNode || this.root_;
    while (current.right !== null) {
      current = current.right;
    }
    return current;
  }

  /**
   * @return {SplayTreeNode} Node having the maximum key value that