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codeforce 1077 F1 and F2 - DP
The only difference between easy and hard versions is the constraints. Vova likes pictures with kittens. The news feed in the social network he uses c ...
分类:其他好文   时间:2018-11-24 14:08:39    阅读次数:148
[LeetCode&Python] Problem 783. Minimum Distance Between BST Nodes
Given a Binary Search Tree (BST) with the root node root, return the minimum difference between the values of any two different nodes in the tree. Exa ...
分类:编程语言   时间:2018-11-24 11:48:30    阅读次数:190
set集合的差集的区别
输出结果: 结论: difference 是拿自己跟别人做比较得到一个返回结果 symmetric_difference 是自己跟别人做比较,然后别人也跟你做比较,把两者之间没有的返回给一个值。 ...
分类:其他好文   时间:2018-11-15 11:03:21    阅读次数:192
集合Set
# 集合与之前列表、元组类似,可以存储多个数据,但是这些数据是不重复的、无序的 # 集合对象还支持union(联合), intersection(交), difference(差)和sysmmetric_difference(对称差集)等数学运算. # python 独有的去重方法(最快去重复) l... ...
分类:其他好文   时间:2018-11-13 00:21:27    阅读次数:150
LeetCode 302. Smallest Rectangle Enclosing Black Pixels
DFS 最一开始想到的就是dfs,从题目给的点开始dfs搜索。 时间复杂度为O(mn) Binary Search 这道题给了一个坐标(x,y),其实是有用意的。如果只是单纯的搜索,我们完全可以搜索整个图。 这道题其实可以用二分来做。由于给定的点是黑的,我们可以从水平和竖直两个方向,分别找到由黑变白 ...
分类:其他好文   时间:2018-11-12 11:39:22    阅读次数:234
混入和继承的区别
Mixin vs inheritance Ask Question up vote 76 down vote favorite 19 What is the difference between a mixin and inheritance? oop inheritance mixins shar ...
分类:其他好文   时间:2018-11-10 20:11:18    阅读次数:197
786. K-th Smallest Prime Fraction
A sorted list A contains 1, plus some number of primes. Then, for every p < q in the list, we consider the fraction p/q. What is the K-th smallest fra ...
分类:其他好文   时间:2018-11-09 20:52:52    阅读次数:296
719. Find K-th Smallest Pair Distance
Given an integer array, return the k-th smallest distance among all the pairs. The distance of a pair (A, B) is defined as the absolute difference bet ...
分类:其他好文   时间:2018-11-08 22:09:02    阅读次数:142
373 Find K Pairs with Smallest Sums
https://leetcode.com/problems/find-k-pairs-with-smallest-sums/discuss/84551/simple-Java-O(KlogK)-solution-with-explanation public class Solution { pub... ...
分类:其他好文   时间:2018-11-08 18:15:10    阅读次数:135
373. Find K Pairs with Smallest Sums
You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k. Define a pair (u,v) which consists of one element from th... ...
分类:其他好文   时间:2018-11-06 11:22:59    阅读次数:191
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