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 trees, we have to check whether both are the same or not. Consider the…
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 subtree. If we print all the nodes of a BST using an inorder traversal…
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 my blog on this topic. As we know, using level order traversal, we traverse…
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, we have to find the maximum depth of a binary tree. We can solve…
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. We have to find two elements out from the given array, where the sum…
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, we will get the result. If a number is odd, we can say that…
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 and return the reversed list. For example: We can solve this problem in many…
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 sequence of characters which reads the same backward as forward So to solve this…
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 be given two strings (ransomNote and magazine). In short, we have to return True…
LeetCode 2124 This one is one of the easy problems on LeetCode. To solve this problem, mainly you have to know how to split a sentence based on spaces and count array elements. If you know the basics of Python,…