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leetcode--Convert Sorted List to Binary Search Tree
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.public class Solution { /** Convert th...
分类:其他好文   时间:2014-06-10 00:22:44    阅读次数:259
[LeetCode] Palindrome Partition [11]
题目:Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome partitioning of s. 解题思路: 回文划分,题目意思是给一个字符串,找出将字符串划分为一系列回文子串的各种可能组合。例如,一个子串“aab“,你需要返回["aa","b"],["a","a","b"]。这个题目的解法也是非常的典型---循环加递归,...
分类:其他好文   时间:2014-06-09 23:24:11    阅读次数:256
jQuery 顶部导航跟随滚动,固定浮动在顶部
jQuery 顶部导航跟随滚动,固定浮动在顶部演示 XML/HTML Codesection>  article class="left">  p>  p>  ul>    li>a href="http://freejs.net/article_jquerywenzi_149.html" title="Ajax 动态加载内容">Ajax 动态加载内容a>li>    li>a href="htt...
分类:Web程序   时间:2014-06-08 18:15:37    阅读次数:215
[LeetCode] Valid Palindrome [10]
题目:For example,"A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. 解题思路:验证一个字符串是否是回文字符串。首先看看wiki上对于回文的解释:回文,亦称回环,是正读反读都能读通的句子,亦有将文字排列成圆圈者,Famous examples include "Amore, Roma", "A man, a plan, a canal: Panama" and "No 'x' in...
分类:其他好文   时间:2014-06-08 16:30:29    阅读次数:235
[LeetCode] Palindrome Number [13]
题目: Determine whether an integer is a palindrome. Do this without extra space. 解题思路: 判断一个int型整数是不是回文数字,这个题也不难,依次取得数字最高位和最低位进行比较,就可以判断是不是回文数字。需要注意的是负数不是回文数字。 代码实现:...
分类:其他好文   时间:2014-06-08 15:35:48    阅读次数:375
latch:cache buffers chains的优化思路
数据块在buffer cache存放是以linked list方式存放的。当一个session想要访问/修改buffer cache的block,首先需要通过hash算法检查该block是否存在于buffer cache中,检查相同的SQL语句是否存在于library cache中也是通过hash算法实现的。要判断block是否存在于buffer cache中,就需要扫描linked list(此处都是串行的,不能并发),获取block的信息。而扫描linked list必须获得一个latch,防止并发对l...
分类:其他好文   时间:2014-06-08 15:31:26    阅读次数:197
leetcode——Add Two Numbers 两个链表表示的正整数对其求和(AC)
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a link...
分类:其他好文   时间:2014-06-08 15:30:28    阅读次数:227
[LeetCode] Palindrome Partitioning II [12]
题目:For example, given s = "aab", Return 1 since the palindrome partitioning ["aa","b"] could be produced using 1 cut 解题思路:给一个字符串,如果字符串可以划分成若干子回文字符串,返回最小的划分数量。 这个题如果还用之前求所有划分组合的循环加递归方法的话,就会得到超时的错误。这是就要考虑别的方法,动态规划倒是一个不错的方法,但是动态规划最重要的是要找到动态方程。本题的动态方程: dp[i] =...
分类:其他好文   时间:2014-06-08 14:56:58    阅读次数:257
LeetCode OJ - Partition List
题目:Given a linked list and a valuex, partition it such that all nodes less thanxcome before nodes greater than or equal tox.You should preserve the or...
分类:其他好文   时间:2014-06-07 20:35:55    阅读次数:236
leetcode--Remove Nth Node From End of List
Given a linked list, remove thenthnode from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = 2. After re...
分类:其他好文   时间:2014-06-07 16:54:26    阅读次数:221
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