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Kth Smallest Element in a BST
https://leetcode.com/problems/kth-smallest-element-in-a-bst/Given a binary search tree, write a functionkthSmallestto find thekth smallest element in ...
分类:其他好文   时间:2015-07-02 11:58:59    阅读次数:190
LeetCode "Kth Smallest Element in a BST"
Simply to utilize BST's property. The two-pass code below can be extended to support frequent insert\delete.struct SNode{ SNode(int rcnt) : cnt(rcn...
分类:其他好文   时间:2015-07-02 11:38:44    阅读次数:108
Project Euler:Problem 52 Permuted multiples
It can be seen that the number, 125874, and its double, 251748, contain exactly the same digits, but in a different order. Find the smallest positive integer, x, such that 2x, 3x, 4x, 5x, and 6x, con...
分类:其他好文   时间:2015-07-02 10:22:55    阅读次数:165
#leetcode#Kth Smallest Element in a BST
Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note:  You may assume k is always valid, 1 ≤ k ≤ BST's total elements. Follow up: What if the...
分类:其他好文   时间:2015-07-02 10:09:45    阅读次数:110
Leetcode 230 Kth Smallest Element in a BST
Given a binary search tree, write a functionkthSmallestto find thekth smallest element in it.Note:You may assume k is always valid, 1 ≤ k ≤ BST's tota...
分类:其他好文   时间:2015-07-02 09:53:05    阅读次数:128
poj3260 The Fewest Coins
Description Farmer John has gone to town to buy some farm supplies. Being a very efficient man, he always pays for his goods in such a way that the smallest number of coins changes hands, i.e., the...
分类:其他好文   时间:2015-06-30 18:32:13    阅读次数:141
Binary Search Tree Iterator -- leetcode
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: next()...
分类:其他好文   时间:2015-06-26 18:11:51    阅读次数:116
Uva - 11536 - Smallest Sub-Array
类似滑动窗口,不过窗口的最大长度需要依靠其中是否包含1~k来判定,右端点从左到右移动,用vis[i]数组记录i在窗口中出现的次数,如果vis[i] == 1,则说明第一次出现,cnt 就增加1。当cnt 和 k 相等的时候,记录下此时的长度,然后左端点向右移动,如果左边出窗口的值原本刚好只有1个时,就要cnt减小1了。...
分类:其他好文   时间:2015-06-26 16:18:08    阅读次数:88
leetCode(24):Binary Search Tree Iterator
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: next()...
分类:其他好文   时间:2015-06-23 13:38:01    阅读次数:103
谱聚类算法(Spectral Clustering)
谱聚类(Spectral Clustering, SC)是一种基于图论的聚类方法——将带权无向图划分为两个或两个以上的最优子图,使子图内部尽量相似,而子图间距离尽量距离较远,以达到常见的聚类的目的。其中的最优是指最优目标函数不同,可以是割边最小分割——如图1的Smallest cut(如后文的Min...
分类:编程语言   时间:2015-06-16 20:55:28    阅读次数:136
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