🔗 LC2667 🟢 Easy 🧩 Pattern – Closures and Higher Order Functions 📅 Day 1/30 Days of JavaScript Write a function createHelloWorld. It should return a new function that always returns “Hello World”. Example Solution While this is a straightforward question, it’s important to understand key JavaScript concepts such as Higher Order Functions,… Read More »Create Hello World Function – 2667
Contains Duplicate – LeetCode problem: We need to check if the given array contains duplicates and return True if duplicates are present and False otherwise. Link: Contains Duplicate LeetCode Difficulty: Easy Examples:Input: nums = [1,2,3,2]Output: true Example 2:Input: nums = [1,2,3,4]Output: false Solution in JavaScript Here we use an object… Read More »Contains Duplicate LeetCode – JS Solution
Problem Statement: For any given string write JavaScript code to console log the count of vowels with separate counts for each vowel occurrence. e.g if enter the string “apple” the output should be vowel count:: a:1, e:1, i:0, o:0, u:0. Let’s try to do this in a single iteration i.e.… Read More »Count Vowels in a String with JavaScript
I had started the #30DaysofCode📚 challenge while I was revising the basic concepts, data structures, and solving easy problems on LeetCode. I documented this so that it helps both me and others to recall what we have learned. How to use this list📑 First, look at the given questions, if… Read More »#30DaysofCode
In the given problem, we have a sorted array, and we need to count the duplicates of each element. In simple words, we should print the no.of times each element occurs. Example Solution approach Since we have a sorted array, things become much easier. Once we traverse through an element,… Read More »Count the Duplicates of Array O(N)
Yes, we are doing it today. The all-time famous interview question, Do you know how to reverse a Linked List? Well turns out, it isn’t that difficult and it’s all about logic and pointers, okay let’s get started. Alright, I already wrote a post explaining the basic operations and structure… Read More »Reverse a Linked List