Data Structure (Basic)

Start Practicing: https://leetcode.com/study-plan/data-structure

Problem Name	Difficulty	Solution Link
217. Contains Duplicate	Easy	View Solutions
53. Maximum Subarray	Easy	View Solutions
1. Two Sum	Easy	View Solutions
88. Merge Sorted Array	Easy	View Solutions
350. Intersection of Two Arrays II	Easy	N/A
121. Best Time to Buy and Sell Stock	Easy	View Solutions
566. Reshape the Matrix	Easy	N/A
118. Pascal's Triangle	Easy	View Solutions
36. Valid Sudoku	Medium	View Solutions
74. Search a 2D Matrix	Medium	View Solutions
387. First Unique Character in a String	Easy	N/A
383. Ransom Note	Easy	View Solutions
242. Valid Anagram	Easy	View Solutions
141. Linked List Cycle	Easy	View Solutions
21. Merge Two Sorted Lists	Easy	N/A
203. Remove Linked List Elements	Easy	N/A
206. Reverse Linked List	Easy	View Solutions
83. Remove Duplicates from Sorted List	Easy	N/A
20. Valid Parentheses	Easy	View Solutions
232. Implement Queue using Stacks	Easy	N/A
144. Binary Tree Preorder Traversal	Easy	View Solutions
94. Binary Tree Inorder Traversal	Easy	View Solutions
145. Binary Tree Postorder Traversal	Easy	View Solutions
102. Binary Tree Level Order Traversal	Easy	View Solutions
104. Maximum Depth of Binary Tree	Easy	View Solutions
101. Symmetric Tree	Easy	View Solutions
226. Invert Binary Tree	Easy	View Solutions
112. Path Sum	Easy	View Solutions