<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Sun, 05 Apr 2026 01:08:11 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/created/leetcode/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[F*ck Leetcode! Why Roy’s Story Matters]]></title><description><![CDATA[Today, let’s dive into something that’s been buzzing around the tech world: the case of Roy and why it’s a wake-up call for our industry. This 21-year-old has inadvertently pulled back the curtain on just]]></description><link>http://direct.ecency.com/leetcode/@simplestack/fck-leetcode-why-roys-story-matters</link><guid isPermaLink="true">http://direct.ecency.com/leetcode/@simplestack/fck-leetcode-why-roys-story-matters</guid><category><![CDATA[leetcode]]></category><dc:creator><![CDATA[simplestack]]></dc:creator><pubDate>Fri, 28 Mar 2025 20:21:00 GMT</pubDate><enclosure url="https://images.ecency.com/p/8DAuGnTQCLptZgjHUrRAJGcW4y1D4A5QVJJ7zjzqqKdfVHSS6NapSCCBeZkxEv9MKE2xvUXNqEkFZP2qd77AcRgTCJc93FftQYb8ajn4QQGaiR6sc9ZUr5McHUbEQKaYeeHq6aRxtCNWHWACG4ymbs9FZTSP6ykq7xfdpUoKubL?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Leetcode - 139. Word Break]]></title><description><![CDATA[Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or more dictionary words. Note that the same word in the dictionary may be]]></description><link>http://direct.ecency.com/coding/@lochard/leetcode-139-word-break</link><guid isPermaLink="true">http://direct.ecency.com/coding/@lochard/leetcode-139-word-break</guid><category><![CDATA[coding]]></category><dc:creator><![CDATA[lochard]]></dc:creator><pubDate>Sat, 05 Aug 2023 07:56:33 GMT</pubDate><enclosure url="https://images.ecency.com/p/2r8F9rTBenJQonvFkRsaKAH39jaKNoUwtKLXMK2cgGcC98nZasFnKLpMmni8ZQYpA1ZJPLJELXGcUCtiMpDJEWsJcqAep3o46Ri16wNNw2a7fpcdKBx385sdywrrQ4z86?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Leetcode - 1089. Duplicate Zeros ]]></title><description><![CDATA[Given a fixed-length integer array arr, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that elements beyond the length of the original array are not written. Do the]]></description><link>http://direct.ecency.com/programming/@lochard/leetcode-1089-duplicate-zeros</link><guid isPermaLink="true">http://direct.ecency.com/programming/@lochard/leetcode-1089-duplicate-zeros</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[lochard]]></dc:creator><pubDate>Tue, 01 Aug 2023 18:03:27 GMT</pubDate><enclosure url="https://images.ecency.com/p/2r8F9rTBenJQonvFkRsaKAH39jaKNoUwtKLXMK2cgGcC98nZasFnKLpMmni8ZQYpA1ZJPLJELXGcUCtiMpDJEWsJcqAep3o46Ri16wNNw2a7fpcdKBx385sdywrrQ4z86?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Little Leetcode Adventures 3: Pow(x, n)]]></title><description><![CDATA[Raising numbers to their powers... this has to be mathematics, right? Photo by Thomas T on Unsplash. It's been some time since the last post! I'm actually still doing Leetcode from time to time, and I]]></description><link>http://direct.ecency.com/hive-169321/@lilacse/little-leetcode-adventures-3-pow</link><guid isPermaLink="true">http://direct.ecency.com/hive-169321/@lilacse/little-leetcode-adventures-3-pow</guid><category><![CDATA[hive-169321]]></category><dc:creator><![CDATA[lilacse]]></dc:creator><pubDate>Sun, 26 Jun 2022 09:14:27 GMT</pubDate><enclosure url="https://images.ecency.com/p/2gsjgna1uruvGBHDnRaj2z6FsL6XEQR3pnqa26GnVn9va7QMAKC2qMqJhMxAuQad8tbCBGtyhYUEruQ4bccZ1kWPokWgzt9aecawaxNt5rzLPec2Ln?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[LeetCode Challenge (Python3). Problem#3]]></title><description><![CDATA[Source Introduction of this challenge: I recently decided to improve my programming skills, so I started using LeetCode to achieve this goal. However, since I don't have much programming experience and]]></description><link>http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-3</link><guid isPermaLink="true">http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-3</guid><category><![CDATA[hive-169321]]></category><dc:creator><![CDATA[life-hacker]]></dc:creator><pubDate>Wed, 20 Apr 2022 17:30:15 GMT</pubDate><enclosure url="https://images.ecency.com/p/3jpR3paJ37V8XPrHkfZdMt57jY6pRt6zEt5iRJV9pqLfKq1xTM3sR33fWpddRLAr3e2iyiFUNWhNWGQqWveiytHcy6TTUbE77yWuvHPbCgAEuwx77Fa7iDWVRbpcCmEi4sV3c?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[LeetCode Challenge (Python3). Problem 2]]></title><description><![CDATA[Source Introduction of this challenge: I recently decided to improve my programming skills, so I started using LeetCode to achieve this goal. However, since I don't have much programming experience and]]></description><link>http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-2</link><guid isPermaLink="true">http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-2</guid><category><![CDATA[hive-169321]]></category><dc:creator><![CDATA[life-hacker]]></dc:creator><pubDate>Sat, 16 Apr 2022 17:04:03 GMT</pubDate><enclosure url="https://images.ecency.com/p/99pyU5Ga1kwqEd86ir7oyJn8p3ttuspNCJpqqSMbhm38iXyP9EEzdPNuaXfrPWNJRLaEapTkHCP7UmqjnEbYBSu3BqJiuPrKwcFFCqmfJusZC74rWY7WRtPkUdJZ3bMAPg?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[LeetCode Challenge (Python3). Problem#1]]></title><description><![CDATA[Source I recently decided to improve my programming skills, so I decided to use LeetCode to achieve this goal. However, since I don't have much programming experience and this is my first time using LeetCode,]]></description><link>http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-1</link><guid isPermaLink="true">http://direct.ecency.com/hive-169321/@life-hacker/leetcode-challenge-python3-problem-1</guid><category><![CDATA[hive-169321]]></category><dc:creator><![CDATA[life-hacker]]></dc:creator><pubDate>Sat, 09 Apr 2022 07:39:36 GMT</pubDate><enclosure url="https://images.ecency.com/p/99pyU5Ga1kwqEd86ir7oyJn8p3ttuspNCJpqqSMbhm38iXyP9EEzdPNuaXfrPWNJRLaEapTkHCP7UmqjnEbYBSu3BqJiuPrKwcFFCqmfJusZC74rWY7WRtPkUdJZ3bMAPg?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[one simple implementation of trie in python3]]></title><description><![CDATA[This is the implementation of trie in python3, you can get the question from implement-trie-prefix-tree. class Trie: def __init__(self): """ Initialize your data structure here.]]></description><link>http://direct.ecency.com/python/@shiziwen/one-simple-implementation-of-trie-in-python3</link><guid isPermaLink="true">http://direct.ecency.com/python/@shiziwen/one-simple-implementation-of-trie-in-python3</guid><category><![CDATA[python]]></category><dc:creator><![CDATA[shiziwen]]></dc:creator><pubDate>Sat, 28 Mar 2020 18:48:15 GMT</pubDate></item><item><title><![CDATA[JavaScript interview questions [with solutions]]]></title><description><![CDATA[I have been a software engineer for almost 5 years now but (for one reason or another) only today for the first time I interviewed another developer for a position in my company. Here is the simple exercise]]></description><link>http://direct.ecency.com/coding/@gaottantacinque/javascript-coding-problems-solved</link><guid isPermaLink="true">http://direct.ecency.com/coding/@gaottantacinque/javascript-coding-problems-solved</guid><category><![CDATA[coding]]></category><dc:creator><![CDATA[gaottantacinque]]></dc:creator><pubDate>Sat, 21 Dec 2019 07:13:39 GMT</pubDate><enclosure url="https://images.ecency.com/p/C3TZR1g81UNaPs7vzNXHueW5ZM76DSHWEY7onmfLxcK2iPPkhwAocu4Wb8wRioGgtEKbGQQh9FpceL8HyD5JoS7DnjBecwDiJidJgY9Hzd1sY1hiQWwwFre?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[【Rust每日新闻】 2018-12-20]]></title><description><![CDATA[Rust Quiz 解读： Quiz 20 #quiz Read More LeetCode already supports Rust @rustlang @LeetCode #leetcode 中国版和美国版都支持了，另外了解到的消息是，目前是基于Rust stable 1.31版，而且还会持续跟进Rust Stable版本。在未来会逐渐加入常用的crate，这个看使用者反馈来持续改进。 刷Leetcode]]></description><link>http://direct.ecency.com/rust/@blackanger/rust-2018-12-20</link><guid isPermaLink="true">http://direct.ecency.com/rust/@blackanger/rust-2018-12-20</guid><category><![CDATA[rust]]></category><dc:creator><![CDATA[blackanger]]></dc:creator><pubDate>Thu, 20 Dec 2018 04:42:57 GMT</pubDate></item><item><title><![CDATA[[Coding study (leetcode)]  Tree problems. 105, 106]]></title><description><![CDATA[이야기 Leetcode에서 트리관련 문제를 이어서 풀고 있습니다. Leetcode와 유사한 서비스로 Hackerank도 있는데요. Hackerank도 잘 되어있어 둘다 활용하여 코딩테스트 공부를 하고있습니다. 문제 Given inorder and postorder traversal of a tree, construct the binary tree. Given]]></description><link>http://direct.ecency.com/kr-dev/@jacobyu/coding-study-leetcode-tree-problems-105-106</link><guid isPermaLink="true">http://direct.ecency.com/kr-dev/@jacobyu/coding-study-leetcode-tree-problems-105-106</guid><category><![CDATA[kr-dev]]></category><dc:creator><![CDATA[jacobyu]]></dc:creator><pubDate>Thu, 07 Jun 2018 16:53:09 GMT</pubDate><enclosure url="https://images.ecency.com/p/7ohP4GDMGPrUMp8dW6yuJTR9MKNu8P8DCXDU9qmmkr1Wbaqvie4dZddoW8yjvAYRAcQeJMt7Gku88WvGCVB2bZa9MMAKVDs8rkzW?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Leetcode] 94, 144, 145. binary tree traversal]]></title><description><![CDATA[서론 Leetcode를 아시나요? Leetcode는 여러 프로그래밍 언어로 자료구조를 공부할 수 있고, 코딩문제들을 풀어볼 수 있습니다. Leetcode에서는 easy, medium, hard로 분류되는 총 804개의 코딩 문제가 있습니다. 804개에서 자신이 원하는 키워드를 검색해서 풀 수도 있으며, 자료구조에 대해 공부하고, 문제를 풀 수 있게도 해줍니다.]]></description><link>http://direct.ecency.com/kr-dev/@jacobyu/leetcode-94-144-145-binary-tree-traversal</link><guid isPermaLink="true">http://direct.ecency.com/kr-dev/@jacobyu/leetcode-94-144-145-binary-tree-traversal</guid><category><![CDATA[kr-dev]]></category><dc:creator><![CDATA[jacobyu]]></dc:creator><pubDate>Thu, 24 May 2018 17:22:06 GMT</pubDate><enclosure url="https://images.ecency.com/p/7ohP4GDMGPrUMp8dW6yuJTR9MKNu8P8DCXDU9qmmiu6eAKhomaZfkdsyW1r3nKGgrUQKcES7MJ3Ney9qgWFyAYkL5pxvsbEh3aBD?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Leetcode] 100.same-tree]]></title><description><![CDATA[문제 [100] Same Tree Easy (47.95%) Total Accepted: 270.6K Total Submissions: 564.2K 두 개의 트리가 있을 때, 같은 트리인지 확인하라. 풀이 과정 같은 트리인지 어떻게 확인하지? 트리 구조가 같은지 체크한다. 두 개의 트리에서 특정 노드의 value가 같은지 체크한다. 탐색 순서는? preorder로]]></description><link>http://direct.ecency.com/jjangjjangman/@jacobyu/leetcode-100-same-tree</link><guid isPermaLink="true">http://direct.ecency.com/jjangjjangman/@jacobyu/leetcode-100-same-tree</guid><category><![CDATA[jjangjjangman]]></category><dc:creator><![CDATA[jacobyu]]></dc:creator><pubDate>Mon, 21 May 2018 16:41:03 GMT</pubDate><enclosure url="https://images.ecency.com/p/7ohP4GDMGPrUMp8dW6yuJTR9MKNu8P8DCXDU9qmmhcFMiZyoeysygN2Pmqy42dpqfVeB2bVZBGek4aPYoo5mUkar8SaBsH9Lu389?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[LeetCode] 677. Map Sum Pairs (Python3)]]></title><description><![CDATA[Implement a MapSum class with insert, and sum methods. Check the website above for more details Medium, 44ms, 100% class MapSum: ## Initialize the dictionary def __init__(self): self.wdict = {} ## Insert]]></description><link>http://direct.ecency.com/kr/@juneepa/leetcode-677-map-sum-pairs-python3</link><guid isPermaLink="true">http://direct.ecency.com/kr/@juneepa/leetcode-677-map-sum-pairs-python3</guid><category><![CDATA[kr]]></category><dc:creator><![CDATA[juneepa]]></dc:creator><pubDate>Sat, 03 Mar 2018 19:45:00 GMT</pubDate></item><item><title><![CDATA[LeetCode 1. Two Sum: CPP Solution]]></title><description><![CDATA[Problem Statement Given an integer array of size N, return indices of the two numbers such that they add up to a specific target. Function Signature: C++ vector<int> twoSum(vector<int> input,]]></description><link>http://direct.ecency.com/leetcode/@elsyr/leetcode-1-two-sum-cpp-solution</link><guid isPermaLink="true">http://direct.ecency.com/leetcode/@elsyr/leetcode-1-two-sum-cpp-solution</guid><category><![CDATA[leetcode]]></category><dc:creator><![CDATA[elsyr]]></dc:creator><pubDate>Fri, 22 Dec 2017 00:46:39 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Objective C — Reverse a NSString]]></title><description><![CDATA[[LeetCode: reverse a string] ( NSString* reverseString(NSString *originalString) { // use a new string to append the chars from the old one NSString *newString = @""; for (int i =]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-objective-c-reverse-a-nsstring</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-objective-c-reverse-a-nsstring</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 21:05:18 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Objective C — Check If a String Has Duplicate Characters]]></title><description><![CDATA[BOOL checkDuplicates(NSString *str) { NSMutableArray *storageArray = [NSMutableArray array]; for (int i = 0; i < str.length; i++) { NSString *charStr = [str substringWithRange:NSMakeRange(i,1)]; if]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-objective-c-check-if-a-string-has-duplicate-characters</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-objective-c-check-if-a-string-has-duplicate-characters</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 20:58:21 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Convert Sorted Array to Binary Search Tree in Objective C]]></title><description><![CDATA[LeetCode Convert Sorted Array to Binary Search Tree in Objective C typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; -(TreeNode *)sortedArrayToBST:(NSArray *array)]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-convert-sorted-array-to-binary-search-tree-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-convert-sorted-array-to-binary-search-tree-in-objective-c</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 20:43:33 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Validate Binary Search Tree in Objective C]]></title><description><![CDATA[LeetCode: Validate Binary Search Tree in Objective C typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; -(BOOL)isValidBST:(TreeNode *)node { return (valid:node]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-validate-binary-search-tree-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-validate-binary-search-tree-in-objective-c</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 20:31:03 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Balanced Binary Tree in Objective C]]></title><description><![CDATA[LeetCode: Balanced Binary Tree in Objective C typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; - (BOOL)isBalanced:(TreeNode *)node { if (!node) return true; return]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-balanced-binary-tree-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-balanced-binary-tree-in-objective-c</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 20:23:27 GMT</pubDate></item></channel></rss>