Phoebe815

2014年11月15日

摘要： Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l... 阅读全文

posted @ 2014-11-15 17:21 Phoebe815 阅读(141) 评论(0) 推荐(0)

[Leetcode] Populating Next Right Pointers in Each Node II

摘要： Follow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any binary tree? Would your previous solution stil... 阅读全文

posted @ 2014-11-15 16:48 Phoebe815 阅读(151) 评论(0) 推荐(0)

[Leetcode] Valid Parentheses

摘要： Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ... 阅读全文

posted @ 2014-11-15 14:15 Phoebe815 阅读(152) 评论(0) 推荐(0)

[Leetcode] Minimum Depth of Binary Tree

摘要： Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le... 阅读全文

posted @ 2014-11-15 08:57 Phoebe815 阅读(157) 评论(0) 推荐(0)

[Leetcode] Gas Station

摘要： There areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimited gas tank and it costscost[... 阅读全文

posted @ 2014-11-15 08:27 Phoebe815 阅读(190) 评论(0) 推荐(0)

2014年11月14日

[Leetcode] Remove Duplicates from Sorted Array

摘要： Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space for a... 阅读全文

posted @ 2014-11-14 16:59 Phoebe815 阅读(125) 评论(0) 推荐(0)

[Leetcode] Rotate Image

摘要： You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?Solution:public cla... 阅读全文

posted @ 2014-11-14 16:48 Phoebe815 阅读(134) 评论(0) 推荐(0)

[Leetcode] Permutation Sequence

摘要： The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,We get the following sequence (ie... 阅读全文

posted @ 2014-11-14 16:22 Phoebe815 阅读(168) 评论(0) 推荐(0)

[Leetcode] Palindrome Partitioning

摘要： Given a strings, partitionssuch that every substring of the partition is a palindrome.Return all possible palindrome partitioning ofs.For example, giv... 阅读全文

posted @ 2014-11-14 12:02 Phoebe815 阅读(141) 评论(0) 推荐(0)

2014年11月13日

[Leetcode] Letter Combinations of a Phone Number

摘要： Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... 阅读全文

posted @ 2014-11-13 13:02 Phoebe815 阅读(114) 评论(0) 推荐(0)

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