3. 无重复字符的最长子串 https://leetcode-cn.com/problems/longest-substring-without-repeating-characters 给定一个字符串 s ，请你找出其中不含有重复字符的最长子串的长度。 这个得出的字符串中不能存…
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2. 两数相加 https://leetcode-cn.com/problems/add-two-numbers 给两个非空链表，每个节点储存一位数字，按逆序排序。返回一个相同形式的链表，表示两个链表的和。 数据在链表中是倒序的，这非常的便于处理计算时出现的进位。那最简单的方式就…
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1. 两数之和 https://leetcode-cn.com/problems/two-sum 给定一个整数数组 nums，目标是找出数组中的两个整数，算数和为 target，返回数组下标（只有一个答案，不能元素重复使用）。其中最简单直接的方法就是暴力遍历，得到所有二元素数组的…
Checkout Algorithm Series, questions are arranged by categories (-) Problem List Retrived from Leetcode Top 100 Liked (2022.01.25) 编号 难度 标签 …
整体构思 项目构思时浏览了很多网络上的 Arduino 项目建议。但列表中大多不够有趣，或时太复杂不容易实现。但其中遇到了一篇来自 Grathio Labs 的文章描述了使用敲门节奏驱动的智能门锁 1。
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What I have done When creating the theme announced in the post Switching to a new theme … I guess. I set up a new branch in the original sou…
About this site Write in Markdown with Visual Studio Code. Site generates with Hugo static site generator (version 0.152.2+extended as of Ja…
This blogsite has been using hugo-tufte theme (with some customization) for a while. I choose the theme because I appreciate the aesthetic l…
Starting from Aug 11, 2021. I am starting a new domain name for my website. ecwu.xyz Personally, the old domain name (ecwuuuuu.com) is good …
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Recently, been asked a question on using neural networks for binary classification. The output layer of the network can be … One output neur…