LeetCode Q 80 - Remove DuplicatesGiven a sorted array nums, remove the duplicates in-place such that duplicates appeared

LeetCode Q 61 - Rotate ListGiven a linked list, rotate the list to the right by k places, where k is non-negative. Examp

LeetCode Q 407 - Trapping Rain Water IIGiven an m x n matrix of positive integers representing the height of each unit c

LeetCode Q 211 - Add and Search Word - Data structure designDesign a data structure that supports the following two ope

LeetCode Q 208 - Implement Trie (Prefix Tree)Implement a trie with insert, search, and startsWith methods. Example:Trie

LeetCode Q 19 - Remove Nth Node From End of ListGiven a linked list, remove the n-th node from the end of list and retur