Zhentiw - 博客园

2019年3月8日

[Algorithm] Write your own Math.pow function in Javascript, using Recursive approach

摘要： /**@abstract * Write your own Math.pow(a int, b int) function * */ function pow (a, b) { let result = 0; let nigate = b = 2) { result = isEven ? pow(a, b / 2) * pow(a, b / 2) : a * pow(... 阅读全文

posted @ 2019-03-08 19:06 Zhentiw 阅读(195) 评论(0) 推荐(0)

[Functional Programming] Fst & Snd, Code interview question

摘要： cons(a, b) constructs a pair, and car(pair) and cdr(pair) returns the first and last element of that pair. For example, car(cons(3, 4)) returns 3, and 阅读全文

posted @ 2019-03-08 18:16 Zhentiw 阅读(305) 评论(0) 推荐(0)

[React GraphQL] Pass Parameters to urql's useQuery React Hook

摘要： Showing how to use 'uqrl' library to do GraphQL in React. 阅读全文

posted @ 2019-03-08 14:36 Zhentiw 阅读(370) 评论(0) 推荐(0)

[Algorithm] Find first missing positive integer

摘要： Given an array of integers, find the first missing positive integer in linear time and constant space. In other words, find the lowest positive intege 阅读全文

posted @ 2019-03-08 02:56 Zhentiw 阅读(375) 评论(0) 推荐(0)

2019年3月7日

[Algorithm] Serialize and Deserialize Binary Tree

摘要： Given the root to a binary tree, implement serialize(root), which serializes the tree into a string, and deserialize(s), which deserializes the string 阅读全文

posted @ 2019-03-07 04:28 Zhentiw 阅读(534) 评论(0) 推荐(0)

2019年3月6日

[Algorithm] Count Negative Integers in Row/Column-Wise Sorted Matrix

摘要： // Code goes here function countNegative (M, n, m) { count = 0; i = 0; j = m - 1; while (j >=0 && i < n) { if (M[i][j] < 0) { count += (j+1) i += 1; } else { j... 阅读全文

posted @ 2019-03-06 14:25 Zhentiw 阅读(150) 评论(0) 推荐(0)

2019年3月5日

[Algorithm] How to use Max Heap to maintain K smallest items

摘要： Let's say we are given an array: We want to get K = 3 smallest items from the array and using Max heap data structure. So this is how to think about i 阅读全文

posted @ 2019-03-05 22:38 Zhentiw 阅读(187) 评论(0) 推荐(0)

[HTML5] Avoiding CSS Conflicts via Shadow DOM CSS encapsulation

摘要： Shadow DOM is part of the web components specification. It allows us to ship self contained components along with their style and isolate the componen 阅读全文

posted @ 2019-03-05 19:39 Zhentiw 阅读(286) 评论(0) 推荐(0)

[React] Simplify and Convert a Traditional React Form to Formik

摘要： Forms in React are not easy. T hey are verbose and several lines of code. However, forms with Formik are much simpler. Formik maintains the state of i 阅读全文

posted @ 2019-03-05 19:33 Zhentiw 阅读(219) 评论(0) 推荐(0)

[Javascript Crocks] Make your own functions safer by lifting them into a Maybe context

摘要： You probably have functions that aren’t equipped to accept a Maybe as an argument. And in most cases, altering functions to accept a specific containe 阅读全文

posted @ 2019-03-05 17:28 Zhentiw 阅读(254) 评论(0) 推荐(0)

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