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leetcode——Remove Duplicates from Sorted List II 删除排序字符串中重复字符(AC)
没什么太多讲的,可以使用递归和迭代两种方法来做,要仔细考虑各种输入情况。code如下:...
分类:其他好文   时间:2014-06-15 15:09:59    阅读次数:145
【Leetcode】Search a 2D Matrix
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right.The first integer of each...
分类:其他好文   时间:2014-06-15 14:12:44    阅读次数:238
[LeetCode] Combinations [38]
题目 Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example, If n = 4 and k = 2, a solution is: [ [2,4], [3,4], [2,3], [1,2], [1,3],...
分类:其他好文   时间:2014-06-15 14:10:54    阅读次数:239
HDU 1661 Assigments 贪心法题解
Problem Description In a factory, there are N workers to finish two types of tasks (A and B). Each type has N tasks. Each task of type A needs xi time to finish, and each task of type B needs yj ti...
分类:其他好文   时间:2014-06-15 11:26:42    阅读次数:195
[LeetCode] Remove Duplicates from Sorted Array
Given a sorted array, remove the duplicates in place such that each element appear only onceand return the new length.Do not allocate extra space for ...
分类:其他好文   时间:2014-06-14 16:59:58    阅读次数:221
[LeetCode] Remove Duplicates from Sorted Array II
Follow up for ”Remove Duplicates”: What if duplicates are allowed at most twice?For example, Given sorted array A = [1,1,1,2,2,3],Your function should...
分类:其他好文   时间:2014-06-14 16:08:32    阅读次数:200
NESTED LOOPS & HASH JOIN & SORT MERGE JOIN
表连接方式及使用场合NESTED LOOP对于被连接的数据子集较小的情况,nested loop连接是个较好的选择。nested loop就是扫描一个表,每读到一条记录,就根据索引去另一个表里面查找,没有索引一般就不会是 nested loops。一般在nested loop中, 驱动表满足条件结果...
分类:其他好文   时间:2014-06-14 15:22:15    阅读次数:218
[LeetCode] Search in Rotated Sorted Array II [36]
题目 Follow up for "Search in Rotated Sorted Array": What if duplicates are allowed? Would this affect the run-time complexity? How and why? Write a function to determine if a given target is in the array. 原题链接(点我) 解题思路 这题和Search in Rotated Sorted Array问题类似,...
分类:其他好文   时间:2014-06-14 12:44:18    阅读次数:266
oracle 11g ocr 冗余配置
在11g 安装过程中默认只能指定一个 dg 用来存储:crs ,voting 但是oracle 官方一般建议我们这么来配置: ■  1、当ocr没有配置镜像,或者冗余存储时 最少3个ocr 。 如果底层存储不是RAID的话,oracle建议镜像OCR,镜像可以避免单点故障。 ■ At least two OCR locations if OCR is configured on...
分类:数据库   时间:2014-06-14 12:29:52    阅读次数:447
[Swift] 数组恒等 === 的 bug?!
数组的恒等 === 在文档中是这么说的: Check whether two arrays or subarrays share the same storage and elements by comparing them with the identity operators (=== and !==). 数组的恒等 === 判断即判断两个数组所指向的元素存储区是否相同。 但 XCode 6 测试下来,结果大为迥异:var a = [1, 2, 3]; a === a 其结果却为 false,...
分类:其他好文   时间:2014-06-14 11:39:39    阅读次数:280
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