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81. Search in Rotated Sorted Array II
Follow up for "Search in Rotated Sorted Array":What if duplicates are allowed? Would this affect the run-time complexity? How and why? Suppose an arra ...
分类:其他好文   时间:2017-02-01 10:48:31    阅读次数:169
Leetcode: Sliding Window Median
方法1:Time Complexity O(NK) 暂时只有两个Heap的做法,缺点:In this problem, it is necessary to be able remove elements that are not necessarily at the top of the heap ...
分类:Windows程序   时间:2017-01-24 07:45:22    阅读次数:265
【LeeetCode】4. Median of Two Sorted Arrays
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 complexity sh ...
分类:其他好文   时间:2017-01-15 18:12:12    阅读次数:188
Leetcode: Optimal Account Balancing
Backtracking: time complexity O(N!) Use HashMap to store the initial debts of each person, negative means the person sends money to others, positive m ...
分类:其他好文   时间:2016-12-22 07:11:31    阅读次数:208
Basic Sort Algorithms
1. Bubble Sort Performance Worst case performance O(n^2)Best case performance O(n)Average case performance O(n^2)Worst case space complexity O(1) auxi ...
分类:其他好文   时间:2016-12-21 23:43:20    阅读次数:229
LintCode 366 Fibonacci
/* 1st method will lead to time limit *//* the time complexity is exponential sicne T(n) = T(n-1) + T(n-2) */ /* 2nd method will need O(n) space, usin ...
分类:其他好文   时间:2016-12-19 08:47:39    阅读次数:153
Leetcode: Range Addition
Time Complexity: O(N+K), Space: O(1) ...
分类:其他好文   时间:2016-12-18 14:32:31    阅读次数:210
Difference between complex and complicated?
Complex is used to refer to the level of components in a system. If a problem is complex, it means that it has many components. Complexity does not ev ...
分类:其他好文   时间:2016-12-12 17:17:26    阅读次数:244
机器学习(4)Hoeffding Inequality--界定概率边界
问题 假设空间的样本复杂度(sample complexity):随着问题规模的增长导致所需训练样本的增长称为sample complexity。 实际情况中,最有可能限制学习器成功的因素是训练数据的有限性。 在使用学习器的过程中,我们希望得到与训练数据拟合程度高的假设(hypothesis)。(在 ...
分类:其他好文   时间:2016-12-10 18:54:09    阅读次数:134
Leetcode: All O`one Data Structure
Solution: O(1) time complexity 解题思路主要参考了网友ivancjw的帖子,数据结构参考了https://discuss.leetcode.com/topic/65634/java-ac-all-strict-o-1-not-average-o-1-easy-to-re ...
分类:其他好文   时间:2016-12-07 09:40:46    阅读次数:113
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