Click here to see the problem details. It’s an easy LeetCode problem with straightforward problem details. In a simple word, we will be given a sentence to check it is Pangram or not. So, what is Pangram? According to the problem description, “A pangram is a sentence where every letter of the English alphabet appears […]
Author: Ibrahim Hasnat
Seven Basic and Useful Commands in Linux
Intro First, Linux is Kernel, not Operating System (OS). There are so many OS based on Linux Kernel. Such as Ubuntu, Fedora, CentOS, etc. These are called Linux distribution or distro. By the way, the purpose of this blog is not about introducing Linux and Linux distro. We are going to know about seven very […]
Valid Palindrome | LeetCode 125 | Python | Solution
Click here to see the problem details on LeetCode. Before solving this problem, we have to know about palindrome. According to the definition of Wikipedia: A palindrome is a word, number, phrase, or other sequence of characters which reads the same backward as forward, such as madam or racecar. Wikipedia The problem says that we […]
Stack | Data Structure
Introduction ‘Stack’ is an abstract and linear data structure and one of the most basic data structures in Computer Science. It’s easy to learn. We will be going to know how Stack works and its implementation. This blog is dedicated to know about Stack data structure. Concept First of all, let’s think about a real-life […]
Sum of Unique Elements | LeetCode 1748 | Python | Solution
Click here to see the problem details. Problem Overview This one is a very much simple problem. We have to find out the sum of all the unique values from an integer array. Nothing else, and we don’t have to check anything extra. Let’s see an example. In the above example, it’s clear that 5 […]
Reverse Only Letters | LeetCode 917 | Python | Solution
Click here to see the problem details. Problem Overview The problem description is pretty precise. It says that we have to return the reverse version of the given string. But we can only reverse letters. Characters that are not a letter stay in the same place. Only letters will change their position. Let’s see an […]
How to use React Icons in a React project
We all know that ReactJS is one of the most popular JavaScript frameworks/libraries. On the other hand, react-icons is an icon package. Basically, react-icons are collections of various types of icon libraries in one place. FontAwesome is one of them. We can use many kinds of icons installing this one package in our project. It […]
Range Sum of BST | LeetCode 938 | Python | Solution
Click here to see the problem on LeetCode. A simple Tree related problem and description is pretty straightforward. We have to return the sum of values of all nodes with a value in the range. The range is actually a minimum integer and a maximum integer. If a node value is in the range, we […]
Binary Tree Preorder Traversal | LeetCode 144 | Python | Solution
Click here to see the problem on LeetCode. The problem description is pretty straightforward. We have to return all the nodes’ values following the preorder traversal algorithm. I can assume that you have a basic understanding of Tree data structure. Mainly, there are four types of traversing algorithms in Binary Tree. Preorder traversal is one […]
Create, read, update, and delete a file in Python
As a language, Python is one of my favorites. One of the main reasons behind it, it’s easy to learn. By the way, the purpose of this blog is not how much I love Python. In this blog, we will be going to know about file handling in Python. Basically, it will be a basic […]