This is a popular algorithmic problem that involves finding the longest substring containing the same letters after replacing a certain number of letters. The sliding window pattern is employed to solve the problem. Try the problem on educative! Although the solution is pretty descriptive on educative, the lack of visualization…

This is a popular algorithm problem that involves a list of integers which indicate meeting time slots in a calendar. The target is to return a merged list by merging the overlapping time slots. Found it on InterviewCake. Although their descriptive solution was super helpful, the lack of visuals is…

The problem is borrowed from InterviewCake. Although they did a great job explaining the solution in detail, there aren’t that many visuals. This post is my attempt to visualize the solution: Sample I/O Input: ‘cat’ output: {‘cat’, ‘atc’, ‘act’, ‘tca’, ‘tac’, ‘cta’} The Pattern: Let’s start small. With 2 chars only. Suppose we had…

This problem is straight outta InterviewCake. Attempted to solve it but got stuck and eventually looked into the solution. Sadly, the solution wasn’t visual enough for me, although it was pretty descriptive. …

Sample data structure: Now, we want to find the total prices, for which we would need to add all the prices in the two records which are essentially part of two objects in the purchases array. The following code solves it:

Hack it yourself! The Problem and example I/O: The problem statement is to find the next greatest element in a linked List. So for the ith node we have to find the jth node, such that node value of j is greater than ith. The catch here is that we have to find the most…

Try it yourself on UVa. It’s Fun! This problem has also been part of the programming challenges on the Algorithm Design Manual’s chapter 2. The Premise The premise of the problem can be chalked out like this way: A guy goes along corridor N times which have N bulbs Every time he…

Well, the title speaks for itself! Try it yourself on HackerRank Apparently this is quite a common interview question (asked at Google Phone Screen). Sadly, I couldn’t find some good visualizations to understand the underlying logic behind the solving this problem. So, I couldn’t help but write one for myself. …

Recently I came across the issue of using the auth module in Nuxt.js and invoking a $router.push in subsequent line of code in the same method. The conundrum began when the lines after the auth.loginWith method did not execute as intended since the page was redirected to the redirect URI. …