May LeetCoding Challenge

A. Week 1

1. First Bad Version
2. Jewels and Stones
3. Ransom Note
4. Number Complement
5. First Unique Character in a String
6. Majority Element
7. Cousins in Binary Tree

B. Week 2

1. Check If It Is a Straight Line
2. Valid Perfect Square
3. Find the Town Judge
4. Flood Fill
5. Single Element in a Sorted Array
6. Remove K Digits
7. Implement Trie (Prefix Tree)

C. Week 3

1. Maximum Sum Circular Subarray
2. Odd Even Linked List
3. Find All Anagrams in a String
4. Permutation in String
5. Online Stock Span
6. Kth Smallest Element in a BST
7. Count Square Submatrices with All Ones

D. Week 4

1. Sort Characters By Frequency
2. Interval List Intersections
3. Construct Binary Search Tree from Preorder Traversal ---------- (Solution)
4. Uncrossed Lines
5. Contiguous Array
6. Possible Bipartition
7. Counting bits

E. Week 5

1. Course Schedule
2. K Closest Points to Origin
3. Edit Distance