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LeetCode Find Minimum in Rotated Sorted Array II
Follow up for "Find Minimum in Rotated Sorted Array":What if duplicates are allowed?Would this affect the run-time complexity? How and why?Suppose a sorted array is rotated at some pivot unknown to yo...
分类:其他好文   时间:2015-07-27 19:09:38    阅读次数:97
LeetCode Find Minimum in Rotated Sorted Array
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).Find the minimum element.You may assume no duplicate exists in the array.思路分析...
分类:其他好文   时间:2015-07-27 19:09:24    阅读次数:117
快速排序的partition版本实现
int partition(int arr[], int low, int high) { int pivot = arr[high]; int i = low-1; for (int j = low; j < high; j++) { i...
分类:编程语言   时间:2015-07-26 15:26:23    阅读次数:106
【LeetCode-面试算法经典-Java实现】【033-Search in Rotated Sorted Array(在旋转数组中搜索)】
【033-Search in Rotated Sorted Array(在旋转数组中搜索)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题  Suppose a sorted array is rotated at some pivot unknown to you beforehand.   (i.e., 0 1 2 4 5 6 7 might become 4 5 6...
分类:编程语言   时间:2015-07-26 07:32:11    阅读次数:170
[LeetCode] Search in Rotated Sorted Array
题目要求: Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given ...
分类:其他好文   时间:2015-07-23 23:20:54    阅读次数:122
行列互转
定义:Pivot英文意思:回转运动PIVOT用于将列值旋转为列名(即行转列),UNPIVOT用于将列名转为列值(即列转行),也可以在SQLServer2000可以用聚合函数配合CASE语句实现。语法:PIVOT和UNPIVOT的语法区别在于是否有使用聚合函数PIVOT:table_source PIVOT( 聚合函数(value_co..
分类:其他好文   时间:2015-07-23 14:12:09    阅读次数:199
T-Sql Pivot & Unpivot
Pivot Unpivot
分类:数据库   时间:2015-07-20 16:11:16    阅读次数:168
pandas中DataFrame类的pivot_table函数------Reshaping by pivoting DataFrame objects
以下内容为截取自pandas官网的doc(请看这里),我做了一些翻译.Reshaping by pivoting DataFrame objectsData is often stored in CSV files or databases in so-called “stacked” or “re...
分类:Windows程序   时间:2015-07-17 13:52:31    阅读次数:320
Algorithm --> 快速排序
快速排序算法思想快速排序采用的思想是分治思想。快速排序是找出一个元素(理论上可以随便找一个)作为基准(pivot),然后对数组进行分区操作,使基准左边元素的值都不大于基准值,基准右边的 元素值都不小于基准值,如此作为基准的元素调整到排序后的正确位置。递归快速排序,将其他n-1个元素也调整到排序后的正...
分类:编程语言   时间:2015-07-16 15:58:04    阅读次数:147
leetcode-153-Find Minimum in Rotated Sorted Array
Find Minimum in Rotated Sorted Array   Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum ele...
分类:其他好文   时间:2015-07-16 09:53:53    阅读次数:128
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