## Hard Coding Problem – Isolation (Codeforces)

Hello, my name is Errichto and today I will show you how to solve problem D Isolation from Codeforces round #542. We’re given a sequence of N integers and must find the number of ways to split this sequence into disjoint segments in such a way that each segment has at most K “unique” numbers […]

## 4 Distinct Digits | hard problem from Topcoder Open 2019

TopCoder Open finals took place around a week ago, and I want to discuss with you Problem – Four distinct digits from that competition We were given two integers X and L, and our task was to find any multiple of X that has length exactly L, This is the number of digits in this […]

## Algorithms and coding interviews – talking with Clement, ex-Google engineer

Okay, hi Clement, I was waiting to have you in my channel I actually started watching you I think from your first video on YouTube So, can you tell us a little bit about yourself, your channel, your business? Sure, so my name is Clément Mihailescu and I used to work at Google. I am […]

## Coding Interview Question – Set Matrix Zeroes (LeetCode)

Hello everybody. I’m Errichto and I will show you a coding interview problem “Set Matrix Zeroes” that you can find on the platform Leetcode. The link is in the description below. In this problem, we are given a rectangular matrix and if an element is 0 we should set its entire row and column to […]

## Winning Google Kickstart 2019 round G — screencast with commentary

Okay, Google kickstart 2019 round G starts in 20 seconds, I set up my environment and my idea for recording is I will turn off the sound even in 10 seconds just to focus on The contest I will try to win, of course, then maybe I will add some commentary after the contest. Wish […]

## Three Leetcode problems – Queens, Dice, Frequency

I will solve three Leetcode problems today. Two medium and one Hard The first problem is Queens that can attack the king, where we are given a chessboard. Some Queens ,one King and we need to find those Queens that can attack this King But like we see here if there is a queen that […]