missing精品文章

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  認(rèn)識(shí) Python 中的 defaultdict

  ...天我們的主角是defaultdict，同時(shí)也會(huì)介紹一下魔法方法__missing__()，本文主要來(lái)源于網(wǎng)友博客，分享給有需要的人。 默認(rèn)值可以很方便 眾所周知，在Python中如果訪問(wèn)字典中不存在的鍵，會(huì)引發(fā)KeyError異常。但是有時(shí)候，字典中的...

  laznrbfe 2019-07-30 15:36 評(píng)論0 收藏0
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  linux下fsevents模塊引起的npm ls報(bào)錯(cuò)解決辦法

  ...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 評(píng)論0 收藏0
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  [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 評(píng)論0 收藏0
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  [Leetcode] Missing Ranges 缺失區(qū)間

  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 評(píng)論0 收藏0
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  [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 評(píng)論0 收藏0
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  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 評(píng)論0 收藏0
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  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 評(píng)論0 收藏0
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  從Java視角理解系統(tǒng)結(jié)構(gòu)（二）CPU緩存

  ...數(shù)據(jù)時(shí)首先會(huì)在最快的cache中找數(shù)據(jù), 如果沒(méi)有命中(Cache miss) 則往下一級(jí)找, 直到三層Cache都找不到,那只要向內(nèi)存要數(shù)據(jù)了. 一次次地未命中,代表取數(shù)據(jù)消耗的時(shí)間越長(zhǎng). 緩存行(Cache line) 為了高效地存取緩存, 不是簡(jiǎn)單隨意地將...

  eternalshallow 2019-08-14 11:40 評(píng)論0 收藏0
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  [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 找第一個(gè)缺失的正整數(shù)，只要先按順序排列好[1, 2, 3, 4, ...]，也就是A[i] = i+1，找到第一個(gè)...

  snifes 2019-08-14 15:20 評(píng)論0 收藏0
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  [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 評(píng)論0 收藏0
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  Python數(shù)據(jù)結(jié)構(gòu)：字典

  ...一個(gè)是給自己定義一個(gè) dict 的子類(lèi)，然后在子類(lèi)中實(shí)現(xiàn) __missing__ 方法。 defaultdict：處理找不到的鍵的一個(gè)選擇 首先我們看下如何使用 defaultdict ： import collections index = collections.defaultdict(list) index[new_key].append(new_value) 這里我們新...

  BlackFlagBin 2019-07-31 11:02 評(píng)論0 收藏0
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  關(guān)于Python Magic Method的若干腦洞

  ...ic Method的有趣用法，可以用__getattr__來(lái)實(shí)現(xiàn)Python版的method_missing。順著這個(gè)腦洞想下去，我發(fā)現(xiàn)Python的Magic Method確實(shí)有很多妙用之處。故在此記下幾種有趣（也可能有用的）Magic Method技巧，希望可以?huà)伌u引玉，打開(kāi)諸位讀者的腦...

  fizz 2019-07-24 18:14 評(píng)論0 收藏0