<?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>Tue, 14 Apr 2026 22:40:10 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/@nbfuhao/rss" rel="self" type="application/rss+xml"/><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><item><title><![CDATA[[LeetCode] Maximum Depth of Binary Tree in Objective C]]></title><description><![CDATA[LeetCode: Maximum Depth of Binary Tree in Objective C typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; - (int)maximumDepth:(TreeNode *)node { if (!node) return 0;]]></description><link>http://direct.ecency.com/programming/@nbfuhao/leetcode-maximum-depth-of-binary-tree-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/programming/@nbfuhao/leetcode-maximum-depth-of-binary-tree-in-objective-c</guid><category><![CDATA[programming]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 20:03:36 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Binary Tree Level Order Traversal in Objective C]]></title><description><![CDATA[typedef struct { int value; struct TreeNode *left; struct TreeNode *right; } TreeNode; -(NSMutableArray *)levelOrder:(TreeNode *)treeNode { NSMutableArray *levelOrderArray = [NSMutableArray array]; if]]></description><link>http://direct.ecency.com/leetcode/@nbfuhao/leetcode-binary-tree-level-order-traversal-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/leetcode/@nbfuhao/leetcode-binary-tree-level-order-traversal-in-objective-c</guid><category><![CDATA[leetcode]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 19:53:57 GMT</pubDate></item><item><title><![CDATA[[LeetCode] Binary Tree Preorder Traversal in Objective C]]></title><description><![CDATA[// typedef struct { // int value; // struct TreeNode *left; // struct TreeNode *right; // } TreeNode; -(NSMutableArray *)preorderTraversal:(TreeNode *)treeNode { NSMutableArray *preorderArray = [NSMutableArray]]></description><link>http://direct.ecency.com/objective/@nbfuhao/leetcode-binary-tree-preorder-traversal-in-objective-c</link><guid isPermaLink="true">http://direct.ecency.com/objective/@nbfuhao/leetcode-binary-tree-preorder-traversal-in-objective-c</guid><category><![CDATA[objective]]></category><dc:creator><![CDATA[nbfuhao]]></dc:creator><pubDate>Mon, 06 Mar 2017 19:46:09 GMT</pubDate></item></channel></rss>