摘要： 2014-05-06 00:17题目链接原题：Given a 2-D matrix represents the room, obstacle and guard like the following (0 is room, B->obstacle, G-> Guard): 0 0 0 B G G ... 阅读全文

摘要： 2014-05-04 00:10题目链接原题：Write a function return an integer that satisfies the following conditions: 1) positive integer 2) no repeated digits, eg., 123... 阅读全文

摘要： 2014-05-03 23:35题目链接原题：For a given node in binary search tree find a next largest number in search tree.题目：给定一个二叉搜索树的节点，找出此节点在树中的中序后继节点，也就是比它大的最小节点。解法... 阅读全文

摘要： 2014-05-03 23:18题目链接原题：Insert a element in a sorted circular linked list题目：题意简单明了，向一个有序的循环单向链表中插入元素，使得链表仍然有序。解法：由于是循环链表，所以表尾指向表头。链表只能顺序访问，不额外添加数据的情况下就... 阅读全文

摘要： 2014-05-03 22:10题目链接原题：Given a dictionary, and a list of letters ( or consider as a string), find the longest word that only uses letters from the str... 阅读全文

摘要： 2014-05-03 21:57题目链接原题：Many sticks with length, every time combine two, the cost is the sum of two sticks' length. Finally, it will become a stick, wh... 阅读全文

摘要： 2014-05-02 10:47题目链接原题：1 Given an unordered array of positive integers, create an algorithm that makes sure no group of integers of size bigger than M... 阅读全文

摘要： 2014-05-02 10:40题目链接原题：Sink Zero in Binary Tree. Swap zero value of a node with non-zero value of one of its descendants so that no node with value ze... 阅读全文

摘要： 2014-05-02 10:07题目链接原题：Mapping '1' = 'A','B','C' '2' = 'D','E','F' ... '9' = input: 112 output :ouput = [AAD, BBD, CCD, AAE, AAF, BBE, BBF, CCE, CCF]题... 阅读全文

摘要： 2014-05-02 09:59题目链接原题：Group Anagrams input = ["star, astr, car, rac, st"] output = [["star, astr"],["car","rac"],["st"]);题目：给定一堆字符串，设法把anagram都排在一起。解... 阅读全文