LeetCode Questions and Answers

Stats

Difficulty	Solved Count
Easy	73
Medium	8

Total Solved: 81

Problems

Easy

Number	Title
21	Merge Two Sorted Lists
94	Binary Tree Inorder Traversal
100	Same Tree
101	Symmetric Tree
104	Maximum Depth of Binary Tree
110	Balanced Binary Tree
111	Minimum Depth of Binary Tree
112	Path Sum
144	Binary Tree Preorder Traversal
145	Binary Tree Postorder Traversal
175	Combine Two Tables
197	Rising Temperature
203	Remove Linked List Elements
206	Reverse Linked List
226	Invert Binary Tree
231	Power of Two
234	Palindrome Linked List
257	Binary Tree Paths
326	Power of Three
342	Power of Four
383	Ransom Note
404	Sum of Left Leaves
412	Fizz Buzz
463	Island Perimeter
501	Find Mode in Binary Search Tree
506	Relative Ranks
509	Fibonacci Number
530	Minimum Absolute Difference in BST
543	Diameter of Binary Tree
559	Maximum Depth of N-ary Tree
563	Binary Tree Tilt
572	Subtree of Another Tree
577	Employee Bonus
584	Find Customer Referee
589	N-ary Tree Preorder Traversal
590	N-ary Tree Postorder Traversal
595	Big Countries
617	Merge Two Binary Trees
620	Not Boring Movies
637	Average of Levels in Binary Tree
653	Two Sum IV - Input is a BST
671	Second Minimum Node In a Binary Tree
733	Flood Fill
783	Minimum Distance Between BST Nodes
872	Leaf-Similar Trees
876	Middle of the Linked List
897	Increasing Order Search Tree
938	Range Sum of BST
965	Univalued Binary Tree
993	Cousins in Binary Tree
1022	Sum of Root To Leaf Binary Numbers
1068	Product Sales Analysis I
1071	Greatest Common Divisor of Strings
1075	Project Employees I
1148	Article Views I
1211	Queries Quality and Percentage
1251	Average Selling Price
1280	Students and Examinations
1342	Number of Steps to Reduce a Number to Zero
1378	Replace Employee ID With The Unique Identifier
1379	Find a Corresponding Node of a Binary Tree in a Clone of That Tree
1480	Running Sum of 1d Array
1581	Customer Who Visited but Did Not Make Any Transactions
1633	Percentage of Users Attended a Contest
1661	Average Time of Process per Machine
1672	Richest Customer Wealth
1683	Invalid Tweets
1757	Recyclable and Low Fat Products
1768	Merge Strings Alternately
1971	Find if Path Exists in Graph
2235	Add Two Integers
2236	Root Equals Sum of Children
2331	Evaluate Boolean Binary Tree

Medium

Number	Title
50	Pow(x, n)
98	Validate Binary Search Tree
113	Path Sum II
133	Clone Graph
570	Managers with at Least 5 Direct Reports
1174	Immediate Food Delivery II
1193	Monthly Transactions I
1934	Confirmation Rate