merge sorted array 题目描述 Given two sorted integer arrays A and B, merge B into A as one sorted array.Note: You may assum…
标签：leetcode
[leetcode]n queens ii
n queens ii 题目描述 Follow up for N-Queens problem.Now, instead outputting board configurations, return the total number of…
[leetcode]unique binary search trees
题目描述 Given n, how many structurally unique BST's (binary search trees) that store values 1...n?For example, Given n = 3,…
[leetcode]roman to integer（罗马数字转整数）
题目描述 Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999. 题目解析 罗马数…
[leetcode]Same Tree
题目描述 Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if…
[leetcode]populating next right pointers in each node
题目描述 题目描述 Given a binary tree [crayon-5cbbf743767ac535130765/] Populate each next pointer to point to its next right nod…
[Leetcode]copy list with random pointer
题目描述 A linked list is given such that each node contains an additional random pointer which could point to any node in t…
leetcode之single-number-ii、Gas station、word break
single-number-ii Given an array of integers, every element appears three times except for one. Find that single one. Not…