Check if Duplicates Exist Within K Manhattan Distance in Matrix

Count reverse pairs in two individually sorted parts of an array

May 21, 2025 · 7 min ·  Tags List of tags for the post   array-algo ·  sorted-array ·  Last updated: Aug 2, 2025

Find All Elements Appearing More Than Size by k Times in Array

Find Even Occurring Element

Find the median in a row-wise sorted 2D matrix

First Duplicate Character in a String

First duplicate element in an array by its index

First Unique element in an array

Maximum revenue by selling K tickets from N windows

May 21, 2025 · 6 min ·  Tags List of tags for the post   array ·  array-algo ·  window ·  Last updated: Jun 8, 2025

Nth Smallest Element in Two Sorted Arrays

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