287. Find the Duplicate Number
The Pigeonhole principle
Nov 14, 20223 min read89
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#codenewbies
Articles tagged with #codenewbies
How to solve Leetcode 1679. Max Number of K-Sum Pairs
An example of using unordered_map
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How to solve Leetcode 104. Maximum Depth of Binary Tree
A simple recursive algorithm with a binary tree
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How to solve Leetcode 1641. Count Sorted Vowel Strings
The math behind the problem
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461. Hamming Distance
Yet another example of the bitwise XOR operator
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448. Find All Numbers Disappeared in an Array
An example of using vector<bool>
Apr 25, 20223 min read92