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The Maximum Depth of a Binary Tree problem also known as LeetCode75 is one of the foundational challenges for anyone learning data structures and algorithms. Understanding how to determine the depth of a binary tree not only prepares you for technical interviews but also improves your problem-solving skills with recursive data structures. In this blog, … Read more

The Maximum Twin Sum of a Linked List problem (LeetCode75) is a popular linked list challenge that tests your ability to manipulate lists, use indexing smartly and compute pairwise sums efficiently. It’s commonly asked in coding interviews because it strengthens your problem-solving skills in array manipulation and linked list traversal. In this blog, we’ll cover … Read more

Reversing a linked list is one of the most fundamental problems in data structures and is frequently asked in coding interviews. The Reverse Linked List problem (LeetCode75) tests your understanding of pointer manipulation, iterative traversal and in-place reordering of linked lists. In this blog, we’ll break down the problem, explain the logic, provide a complete … Read more

Linked lists are fundamental data structures in computer science, and manipulating their nodes efficiently is a key skill for coding interviews and software development. The Odd Even Linked List problem (LeetCode75) is a classic exercise that tests your understanding of linked list traversal, pointer manipulation and node reordering. In this blog, we’ll break down the … Read more

Linked lists are one of the most fundamental data structures in computer science and form the backbone of many real-world systems. The Delete the Middle Node of a Linked List problem (LeetCode75) is an excellent exercise to practice two-pointer techniques, linked list traversal and node manipulation. It is not only common in coding interviews but … Read more

The Dota2 Senate problem (LeetCode75) is an interesting simulation-based challenge that requires careful handling of queues and strategic thinking. It’s a popular problem because it combines string processing, greedy decisions and queue-based simulation into a single coding exercise. In this blog, we’ll break down the problem statement, provide examples, walk through the complete Python solution … Read more

The Number of Recent Calls problem is a great example of how queue-based data structures can efficiently handle time-based requests. The problem might seem simple at first but it tests your ability to design an algorithm that manages sliding windows of data within strict time constraints. This type of problem frequently appears in coding interviews … Read more

Decoding strings with nested patterns is a common problem in coding interviews, competitive programming, and real-world applications. The Decode String problem on LeetCode challenges you to expand strings encoded in the format k[encoded_string] including nested and multi-digit repetitions. Mastering this problem sharpens your skills in stack operations, string manipulation and algorithmic thinking, making it a … Read more