Scenario You are on a machine that does not have tr . You want to use tr to quickly edi...
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Docker in practice: pipe stdin into docker executables
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Docker in practice: export a mongodb collection
Question You starts a remote terminal in a linux machine that has network access to a M...
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Bubble Sort: Imperative vs Funtional Way
Imperative Way (Optimized) Functional Way (Not Optimized Yet) Functional Way (Optimized)
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Quicksort idea to solve Kth-largest in O(N)
Background knowledge The formula relation of Kth big and its element position (0-indexe...
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In-place Partition func in quicksort
ˋˋˋ function partition(nums, left, right) { const pivot = const pivotPos = nums[right]...
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A glance on PEG.js
It really reminds my course "automata" in the university. https://pegjs.org/online How ...
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One-liner JS debug-logger for recursive function coding exercise
Coding exercise like leetcode, lintcode, hacker rank are just gym rooms for programmers...
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Stone Game with Recursion
Many days ago I showed how to use dynamic programming to solve the stones game question...
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2018-06-02 How to do inheritance in JS
JS is incredibly flexible. This is a quick recipe for OOP people. The old way:demo The ...
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2018-04 學習筆記 - 客戶端加載用戶圖片
公司有個需求實現客戶端圖片壓縮上傳。複習一下相關api。 學習回顧 antd-mobile 有個imagePicker的實現，打算去讀一下源碼。但是自己一直在想這個客戶端圖片...
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Rotate String by Left
Questions HackerankRotate a string of n characters by k steps. Idea Index Addition A po...
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Rotate String
Question Given a string and an offset, rotate string by offset. (rotate from left to ri...
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Stone game
Question from lintcodeThere is a stone game.At the beginning of the game the player pic...
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Longest Increasing Subsequence - Solution 2
Question from lintcode Given a sequence of integers, find the longest increasing subseq...
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Longest Increasing Subsequence
Question from lintcode Given a sequence of integers, find the longest increasing subseq...
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Maximum Product Subarray
Question from lintcodeFind the contiguous subarray within an array (containing at least...