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Day 30/30 Coding Challenge In this video, we solve one of the most popular coding interview questions – Two Sum using Java.

Day 28/30 of my DSA Challenge In this video, we solve LeetCode 145: Binary Tree Postorder Traversal using Java in a simple ...

Tags ✨ leetcode problems leetcode problems java leetcode problems python leetcode problems that got me tired leetcode ...

Day 21/30 of My DSA Challenge In this video, we solve LeetCode 9 – Palindrome Number using a simple and efficient Java ...

In this video, we solve the Binary Tree Inorder Traversal problem — one of the most important LeetCode Easy questions and a ...

Day 14/30 of DSA Challenge In this video, we solve LeetCode 191: Number of 1 Bits (Hamming Weight) using an easy and ...

Problem: Given a non-negative integer x, return the square root of x rounded down to the nearest integer. The returned integer ...

Problem: You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of ...

In this video, we solve LeetCode 258 – Add Digits using a simple while loop approach in Java. This problem is a great ...

In this video, we solve LeetCode 1528 – Shuffle String using a clean and efficient index-mapping approach in Java. This problem ...

In this video, we solve LeetCode 1523 – Count Odd Numbers in an Interval Range using a simple and efficient math-based ...

In this video, we solve the famous Invert Binary Tree problem — a classic LeetCode Easy challenge and one of the most important ...

In this video, we solve LeetCode 2778 – Sum of Squares of Special Elements using a clean and efficient approach in Java.

In this video, we solve LeetCode 507 – Perfect Number using a simple loop-based approach in Java. This problem is a classic ...

In this video, we solve LeetCode 2032 – Two Out of Three using an efficient approach with HashSet and HashMap in Java.

LeetCode 101 – Symmetric Tree | Java Solution | Binary Tree DFS Explained Can you determine if a binary tree is a mirror of itself ...

In this video, we solve LeetCode 1576 – Replace All ?'s to Avoid Consecutive Repeating Characters using a clean and efficient ...

In this video, we solve LeetCode 1748 – Sum of Unique Elements using a clean and efficient HashMap / frequency-count ...

In this video, we solve LeetCode 263 – Ugly Number using a simple and efficient approach in Java. This problem helps you ...

Day 19 of my 30 Days DSA Challenge In this video, we solve LeetCode 1480: Running Sum of 1D Array using an easy and ...