missing

missing精品文章

• 

  认识 Python 中的 defaultdict

  ...天我们的主角是defaultdict，同时也会介绍一下魔法方法__missing__()，本文主要来源于网友博客，分享给有需要的人。 默认值可以很方便 众所周知，在Python中如果访问字典中不存在的键，会引发KeyError异常。但是有时候，字典中的...

  laznrbfe 2019-07-30 15:36 评论0 收藏0
• 

  linux下fsevents模块引起的npm ls报错解决办法

  ...eduped │ └── util-deprecate@1.0.2 └── upath@1.1.2 npm ERR! missing: mkdirp@0.5.1, required by node-pre-gyp@0.10.3 npm ERR! missing: minimist@0.0.8, required by mkdirp@0.5.1 npm ERR! missing: mini...

  SwordFly 2019-08-23 16:44 评论0 收藏0
• 

  [Leetcode] Missing Number and Missing First Positi

  Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2. Note: Your algorithm...

  Forest10 2019-08-14 12:24 评论0 收藏0
• 

  [Leetcode] Missing Ranges 缺失区间

  Missing Ranges Given a sorted integer array where the range of elements are [lower, upper] inclusive, return its missing ranges. For example, given [0, 1, 3, 50, 75], lower = 0 and upper = 99, return...

  Gilbertat 2019-08-14 12:36 评论0 收藏0
• 

  [LintCode] Missing String

  Problem Given two strings, you have to find the missing string. Example Given a string str1 = This is an exampleGiven another string str2 = is example Return [This, an] Solution public class Solution ...

  IamDLY 2019-08-16 11:02 评论0 收藏0
• 

  Missing letters——Easy algorithm challenge

  problem: You will create a program that will find the missing letter from a string and return it. If there is no missing letter, the program should return undefined. There is currently no test case fo...

  stormgens 2019-08-20 18:07 评论0 收藏0
• 

  268. Missing Number

  ...aining n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1, 3] return 2. Note:Your algorithm should run in linear runtime comp...

  NSFish 2019-08-14 14:18 评论0 收藏0
• 

  从Java视角理解系统结构（二）CPU缓存

  ...数据时首先会在最快的cache中找数据, 如果没有命中(Cache miss) 则往下一级找, 直到三层Cache都找不到,那只要向内存要数据了. 一次次地未命中,代表取数据消耗的时间越长. 缓存行(Cache line) 为了高效地存取缓存, 不是简单随意地将...

  eternalshallow 2019-08-14 11:40 评论0 收藏0
• 

  [LintCode] First Missing Positive

  Problem Given an unsorted integer array, find the first missing positive integer. Example Given [1,2,0] return 3,and [3,4,-1,1] return 2. Note 找第一个缺失的正整数，只要先按顺序排列好[1, 2, 3, 4, ...]，也就是A[i] = i+1，找到第一个...

  snifes 2019-08-14 15:20 评论0 收藏0
• 

  [LeetCode] 41. First Missing Positive

  Problem Given an unsorted integer array, find the smallest missing positive integer. Example 1: Input: [1,2,0]Output: 3Example 2: Input: [3,4,-1,1]Output: 2Example 3: Input: [7,8,9,11,12]Output: 1Note...

  30e8336b8229 2019-08-16 13:56 评论0 收藏0
• 

  Python数据结构：字典

  ...一个是给自己定义一个 dict 的子类，然后在子类中实现 __missing__ 方法。 defaultdict：处理找不到的键的一个选择 首先我们看下如何使用 defaultdict ： import collections index = collections.defaultdict(list) index[new_key].append(new_value) 这里我们新...

  BlackFlagBin 2019-07-31 11:02 评论0 收藏0
• 

  关于Python Magic Method的若干脑洞

  ...ic Method的有趣用法，可以用__getattr__来实现Python版的method_missing。顺着这个脑洞想下去，我发现Python的Magic Method确实有很多妙用之处。故在此记下几种有趣（也可能有用的）Magic Method技巧，希望可以抛砖引玉，打开诸位读者的脑...

  fizz 2019-07-24 18:14 评论0 收藏0