In my free time, I enjoy solving programming challenges for a few reasons:

1. To develop my problem-solving skills,
2. To practice using algorithms and data structures, and
3. The satisfaction of solving a challenge.

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Here are the problems on LeetCode to which I have submitted accepted solutions:

• [Medium] 567 - Permutation in String
• [Medium] 655 - Print Binary Tree
• [Medium] 739 - Daily Temperatures
• [Medium] 795 - Number of Subarrays with Bounded Maximum
• [Medium] 873 - Length of Longest Fibonacci Subsequence
• [Medium] 1026 - Maximum Difference Between Node and Ancestor
• [Medium] 1291 - Sequential Digits
• [Medium] 1306 - Jump Game III
• [Medium] 1487 - Making File Names Unique
• [Hard] 295 - Find Median from Data Stream

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Here are some of the problems on HackerRank to which I have submitted accepted solutions:

Algorithms:

• [Easy] Chocolate Feast
• [Easy] Service Lane
• [Easy] Cavity Map
• [Easy] Caesar Cipher
• [Easy] Sherlock and The Beast
• [Medium] Forming a Magic Square
• [Medium] Climbing the Leaderboard
• [Medium] Extra Long Factorials
• [Medium] Non-Divisible Subset
• [Medium] The Grid Search

Data Structures

• [Easy] Left Rotation
• [Easy] Print the Elements of a Linked List
• [Easy] Insert a Node at the Tail of a Linked List
• [Easy] Tree: Preorder Traversal
• [Easy] Tree: Postorder Traversal
• [Easy] Tree: Inorder Traversal
• [Easy] Tree: Height of a Binary Tree
• [Medium] Sparse Arrays
• [Medium] Cycle Detection
• [Medium] Tree: Huffman Decoding

C++:

• [Easy] Strings
• [Easy] Structs
• [Easy] Class
• [Medium] Attribute Parser
• [Medium] Inherited Code
• [Medium] Exceptional Server
• [Medium] Virtual Functions
• [Medium] Deque-STL
• [Medium] Hotel Prices
• [Hard] Abstract Classes - Polymorphism

Python:

• [Easy] Say "Hello, World!" with Python
• [Easy] Python If-Else
• [Easy] Arithmetic Operators
• [Easy] Python: Division
• [Easy] Loops
• [Easy] Print Function
• [Easy] List Comprehensions
• [Easy] Find the Runner-Up Score!
• [Easy] Nested Lists
• [Medium] Write a Function

SQL:

• [Easy] Employee Salaries
• [Easy] Type of Triangle
• [Easy] Population Census
• [Easy] African Cities
• [Easy] Average Population of Each Continent
• [Medium] The PADS
• [Medium] Occupations
• [Medium] Binary Tree Nodes
• [Medium] New Companies
• [Medium] The Report