2014年10月26日
[Leetcode] Longest Common Prefix
摘要： Write a function to find the longest common prefix string amongst an array of strings.Solution:第0个字符串和其他字符串逐个求前缀对strs做了一个排序操作：Arrays.sort(strs);使得最终结果... 阅读全文
posted @ 2014-10-26 16:13 Phoebe815 阅读(133) 评论(0) 推荐(0)
[Leetcode] Plus One
摘要： Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at... 阅读全文
posted @ 2014-10-26 16:11 Phoebe815 阅读(125) 评论(0) 推荐(0)
[Leetcode] Palindrome Number
摘要： Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers be palindromes? (i... 阅读全文
posted @ 2014-10-26 15:39 Phoebe815 阅读(146) 评论(0) 推荐(0)
[Leetcode] Symmetric Tree
摘要： Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 / \ ... 阅读全文
posted @ 2014-10-26 15:17 Phoebe815 阅读(133) 评论(0) 推荐(0)
[Leetcode] Length of Last Word
摘要： Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the string.If the last word doe... 阅读全文
posted @ 2014-10-26 13:54 Phoebe815 阅读(131) 评论(0) 推荐(0)
[Leetcode] Balanced Binary Tree
摘要： Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in which the depth... 阅读全文
posted @ 2014-10-26 13:29 Phoebe815 阅读(168) 评论(0) 推荐(0)
[Leetcode] Remove Element
摘要： Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat... 阅读全文
posted @ 2014-10-26 12:20 Phoebe815 阅读(132) 评论(0) 推荐(0)
[Leetcode] Populating Next Right Pointers in Each Node
摘要： Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; }Populate each next pointe... 阅读全文
posted @ 2014-10-26 02:00 Phoebe815 阅读(155) 评论(0) 推荐(0)