Longest Substring with At Least K Repeating Characters

Count Number of Homogenous Substrings

Super Pow

Kth Largest Element in an Array

Kth Smallest Element in an Array

Sort a Linked List

Skyline Problem

Convert Sorted Array to height-balanced Binary Search Tree

Search a 2D Matrix 2 - Rows and columns are sorted

Number of Ways to Reorder Array to Get Same BST

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