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What is a Statistic?
from:https://controls.engin.umich.edu/wiki/index.php/Basic_statistics:_mean,_median,_average,_standard_deviation,_z-scores,_and_p-value#Mean_and_Weigh...
分类:其他好文   时间:2015-10-15 12:46:00    阅读次数:205
中值算法
引言一个数据集合的中值(Median)通常是很一个很有价值的统计指标,由于它对异常数据不敏感,所以一般会比平均值(Mean)更能体现数据集合数据的“平均水平”。然而,对于无序数据序列求中值在实现上却没有求平均值那样简单优美的O (N)复杂度的算法。最容易想到的做法是先对数据进行排序,然后取中点的值,...
分类:编程语言   时间:2015-10-11 11:19:36    阅读次数:258
leetcode 4 : Median of Two Sorted Arrays 找出两个数组的中位数
题目: There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexit...
分类:编程语言   时间:2015-10-05 23:12:51    阅读次数:298
Median of Two Sorted Arrays
题目: There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity s....
分类:其他好文   时间:2015-10-03 20:41:54    阅读次数:277
[LeetCode]Median of Two Sorted Arrays
题目描述:(题目链接)There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time comple...
分类:其他好文   时间:2015-10-02 18:35:30    阅读次数:141
LeetCode #4 Median of Two Sorted Arrays (H)
[Problem]There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexi...
分类:其他好文   时间:2015-10-01 00:28:25    阅读次数:288
[LeetCode]4. Median of Two Sorted Arrays两个排序数组合并后的中位数
There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should...
分类:编程语言   时间:2015-09-29 16:29:58    阅读次数:179
poj 2388 Who's in the Middle
DescriptionFJ is surveying his herd to find the most average cow. He wants to know how much milk this 'median' cow gives: half of the cows give as muc...
分类:其他好文   时间:2015-09-26 17:12:17    阅读次数:189
【树状数组逆序对】USACO.2011JAN-Above the median
【题意】给出一串数字,问中位数大于等于X的连续子串有几个。(这里如果有偶数个数,定义为偏大的那一个而非中间取平均)【思路】下面的数据规模也小于原题,所以要改成__int64才行。没找到测试数据,自己编的几组。简单来说读入每个数,大于等于中位数设为1,小于设为-1,前i个数的和建立一个树状数组,求逆序...
分类:编程语言   时间:2015-09-23 23:13:03    阅读次数:419
Median of Two Sorted Arrays 解答
QuestionThere are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexit...
分类:其他好文   时间:2015-09-22 06:39:35    阅读次数:155
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