Duplicates-Algo | K5kC | Code & More

Check if Duplicates Exist Within K Manhattan Distance in Matrix

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

Find distinct elements common to all rows of a matrix

Find Even Occurring Element

Find K Pairs with Smallest Sums

Find largest 1M numbers in 1B numbers

First Duplicate Character in a String

First duplicate element in an array by its index

First Unique element in an array

Kth Unique Character in a String