xinyu04

摘要： Given the head of a singly linked list, reverse the list, and return the reversed list. Solution 点击查看代码 /** * Definition for singly-linked list. * str 阅读全文

摘要： You are given the heads of two sorted linked lists list1 and list2. Merge the two lists in a one sorted list. The list should be made by splicing toge 阅读全文

摘要： Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level). Solution 用 $BFS$ 即 阅读全文