此題真可謂是練習編程語言的絕好材料 ! import java.util.*;class Solution {
class Item {Map<String, Integer> vars = new TreeMap<>();int k = 1;String tos() {StringBuilder builder = new StringBuilder();List<String> a =
106. Convert Sorted List to Binary Search Tree/109. Convert Sorted List to Binary Search Tree 本題難度: Medium/EasyTopic: Linked ListDescription A linked list is given such that each node contains an additional random pointer which could point to any node