Check if Number is a Sum of Powers of Three

Convert BST to Greater Tree

Verify Preorder Serialization of a Binary Tree

All Paths From Source to Target

Path with Maximum Gold

Flip Equivalent Binary Trees

Matchsticks to Square

Unique Binary Search Trees

Minimum Jumps to Reach Home

Find First And Last Position of Element in Sorted Array

Unique Binary Search Trees II

Perfect Squares

Distribute Coins in Binary Tree

Maximal Square

Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit

Remove All Occurrences of a Substring

Increasing Triplet Subsequence

Sum Root to Leaf Numbers

Find Eventual Safe States

Next Permutation

Flatten Binary Tree to Linked List

Employee Importance

Reverse Substrings Between Each Pair of Parentheses

Online Stock Span

Count Good Meals

Lowest Common Ancestor of Deepest Leaves

Max Number of K Sum Pairs

Find Original Array From Doubled Array

Longest Univalue Path

Longest Common Subsequence

Minimum Number of Operations to Move All Balls to Each Box

Reverse Words in a String II

Minimum Operations to Make a Uni-Value Grid

Get Equal Substrings Within Budget

Deepest Leaves Sum

Nearest Exit from Entrance in Maze

Sentence Similarity III

Maximum Difference Between Node and Ancestor

Longest Subarray of 1s After Deleting One Element

String to Integer (atoi)

Best Sightseeing Pair

Maximum Font to Fit a Sentence in a Screen

Longest Substring Of All Vowels in Order

Closest Leaf in a Binary Tree

Group Shifted Strings

Most Profit Assigning Work

Minimum Falling Path Sum

Triangle

Paint House

Longest Palindromic Subsequence