YuriFLAG

摘要： Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example, Given the following matrix: 阅读全文

摘要： Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example, Given n = 3, You should return the follow 阅读全文

摘要： Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: " 阅读全文

摘要： Given a list, rotate the list to the right by k places, where k is non-negative. Example Given 1->2->3->4->5 and k = 2, return 4->5->1->2->3. 思路：画图。 1 阅读全文

摘要： You have two every large binary trees: T1, with millions of nodes, and T2, with hundreds of nodes. Create an algorithm to decide if T2 is a subtree of 阅读全文

摘要： Given a singly linked list L: L0 → L1 → … → Ln-1 → Ln reorder it to: L0 → Ln → L1 → Ln-1 → L2 → Ln-2 → … Example Given 1->2->3->4->null, reorder it to 阅读全文

摘要： Given a linked list, remove the nth node from the end of list and return its head. Example Given linked list: 1->2->3->4->5->null, and n = 2. After re 阅读全文

摘要： Given s1, s2, s3, find whether s3 is formed by the interleaving of s1 and s2. For example, Given:s1 = "aabcc",s2 = "dbbca", When s3 = "aadbbcbcac", re 阅读全文

摘要： Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the fo 阅读全文

摘要： Given two strings, find the longest common subsequence (LCS). Your code should return the length of LCS. Example For "ABCD" and "EDCA", the LCS is "A" 阅读全文