vlice

摘要： 1.题目描述 Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root 阅读全文

摘要： 1.题目描述 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the far 阅读全文

摘要： 1.题目描述 Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). 判断输入的树杈是否是镜像结构 2.题目分析 判断给出的树杈每一级对应的左节点与右节点是否相同 3 阅读全文

摘要： 1.题目描述 Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurall 阅读全文

摘要： 1.题目描述 Given two binary strings, return their sum (also a binary string). 做二进制加法 2.题目分析 这个题偷懒了，直接进行了进制转换 3.解题思路 阅读全文

摘要： 1.题目描述 Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any 阅读全文

摘要： 恢复内容开始 1.题目描述 Given a sorted array, remove the duplicates in-placesuch that each element appear only once and return the new length.Do not allocate ex 阅读全文

摘要： 1.题目描述 Given a sorted array, remove the duplicates in-placesuch that each element appear only once and return the new length.Do not allocate extra spa 阅读全文

摘要： 1.题目描述 Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserte 阅读全文

摘要： 1.题目描述 Given a sorted linked list, delete all duplicates such that each element appear only once. 给出一个链表，删除重复元素，确保每个元素只出现一次 2.题目分析 链表中的数字按一定顺序排好，所以只需要 阅读全文