LeetCode 200 The number of islands is one of the most popular programming problems. Read the problem description first. Before getting into the solution, I assume...
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Same Tree | LeetCode 100 | Python | Solution
LeetCode 100 It’s an easy LeetCode problem, and the description is concise and straightforward. We can solve this problem using the DFS algorithm. From two binary...
Continue reading...Kth Smallest Element in a BST | LeetCode 230 | Python | Solution
LeetCode 230 I hope you already know about Binary Search Tree. In BST, each node is greater than its left subtree and smaller than its right...
Continue reading...Binary Tree Level Order Traversal | LeetCode 102 | Python | Solution
LeetCode 102 This problem just simply the implementation of the level order traversal algorithm. If you don’t know about level order traversal yet, you can check...
Continue reading...Maximum Depth of Binary Tree | LeetCode 104 | Python | Solution
LeetCode 104 It’s a common and basic type of problem. The problem title is self-explanatory. We all know about a binary tree. To solve this problem,...
Continue reading...Two Sum | LeetCode 1 | Python | Solution
LeetCode 1 Read the problem description first and think about the problem. We will be given an integer array and target. Target is also an integer....
Continue reading...Largest Odd Number in String | LeetCode 1903 | Python | Solution
LeetCode 1903 It’s a simple problem. We have to return the largest odd number from the given string. If we check odd numbers from the last,...
Continue reading...Reverse Linked List | LeetCode 206 | Python | Solution
LeetCode 206 Reverse Linked List is one of the classic programming problems. The problem description is nothing complicated. We have to reverse the given Linked List...
Continue reading...Palindrome Number | LeetCode 9 | Python | Solution
LeetCode 9 Before getting into the solution, let’s see the definition of a palindrome. According to Wikipedia: A palindrome is a word, number, phrase, or other...
Continue reading...Ransom Note | LeetCode 383 | Python | Solution
LeetCode 383 Problem Overview Ransom Note is a pretty common programming problem. The problem description is concise and understandable. So, this problem says that we will...
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