₦airaland Forum

I've been invited for several interviews the blocker has always been algorithms. How did you guys overcome this? Practical guide preferred

Join my tutorial and coding group. Check my post for details.

Guest911:
I've been invited for several interviews the blocker has always been algorithms. How did you guys overcome this? Practical guide preferred

Can you share those algorithm questions?

gbolly1151:
Can you share those algorithm questions?

Given a array of numbers representing the stock prices of a company in chronological order, write a function that calculates the maximum profit you could have made from buying and selling that stock. You're also given a number fee that represents a transaction fee for each buy and sell transaction.

You must buy before you can sell the stock, but you can make as many transactions as you like.

For example, given [1, 3, 2, 8, 4, 10] and fee = 2, you should return 9, since you could buy the stock at 1 dollar, and sell at 8 dollars, and then buy it at 4 dollars and sell it at 10 dollars. Since we did two transactions, there is a 4 dollar fee, so we have 7 + 6 = 13 profit minus 4 dollars of fees.

Where the Nairaland developers Dey abeg

Guest911:
I've been invited for several interviews the blocker has always been algorithms. How did you guys overcome this? Practical guide preferred

I will advise you to check on google on:

1.how to write good algorithms and
2. study on data structure and algorithm

,there are many pdf online to learn from.

Chat me up on 0818_543_1319 and I will give u free tip to kill any Algorithmic challenges and Data structures questions

Guest911:
Where the Nairaland developers Dey abeg

Chat me up on 0818_543_1319 and I will give u free tip to kill any Algorithmic challenges and Data structures questions

Join my group
https:///GUMmjY8MQdO53SRhj1mcrO

Guest911:
Where the Nairaland developers Dey abeg

Guest911:
I've been invited for several interviews the blocker has always been algorithms. How did you guys overcome this? Practical guide preferred

I experience the same sometimes around October last year. That has made me to get good books on data structure and algorithm.

Get this textbook. Crack coding interview 6th edition

Guest911:
Given a array of numbers representing the stock prices of a company in chronological order, write a function that calculates the maximum profit you could have made from buying and selling that stock. You're also given a number fee that represents a transaction fee for each buy and sell transaction.

You must buy before you can sell the stock, but you can make as many transactions as you like.

For example, given [1, 3, 2, 8, 4, 10] and fee = 2, you should return 9, since you could buy the stock at 1 dollar, and sell at 8 dollars, and then buy it at 4 dollars and sell it at 10 dollars. Since we did two transactions, there is a 4 dollar fee, so we have 7 + 6 = 13 profit minus 4 dollars of fees.

racking my brain over the challenge.....

Join hackerrank, you will get a lot of algorithms to practice from.
If you have any difficulty with a problem, view the discussion tab.

This is easy just make sure u don't buy or sell below or at the given transaction price to make profit U can solve this by iteration of the array given!

Guest911:
Given a array of numbers representing the stock prices of a company in chronological order, write a function that calculates the maximum profit you could have made from buying and selling that stock. You're also given a number fee that represents a transaction fee for each buy and sell transaction.

You must buy before you can sell the stock, but you can make as many transactions as you like.

For example, given [1, 3, 2, 8, 4, 10] and fee = 2, you should return 9, since you could buy the stock at 1 dollar, and sell at 8 dollars, and then buy it at 4 dollars and sell it at 10 dollars. Since we did two transactions, there is a 4 dollar fee, so we have 7 + 6 = 13 profit minus 4 dollars of fees.

afuye:
This is easy just make sure u don't buy or sell below or at the given transaction price to make profit U can solve this by iteration of the array given!

Please attempt the challenge, what matters is your approach / thought process

Guest911:
Please attempt the challenge, what matters is your approach / thought process

which language you want make i write am
java, php or javascript?

Thought I was a bit decent with arrays and arraylists but no idea how to get around this. This shows I’ve still got a long way to go smh.

i don fix am
you can test it here

http://shineforthmedia.com.ng/stock.php

Guest911:
I've been invited for several interviews the blocker has always been algorithms. How did you guys overcome this? Practical guide preferred

99% of the time they dont' even wanna see you pass the algorithm test except it's a fairly easy and popular one . . like the stock one above, it's all over internet, matter of fact, all of them are . . . so they know you can cram and bulldoze your way through . .

What they want to see if your approach towards it . . did you bulldoze you way through and dropped an algo that runs in 0(n!) time?
or you refined your approach and ended with an O(1) algo . . . or you dropped both solutions and explained why the latter is better than the former?
etc

I'll pick solution #3, then #2 ... while #1 would be leaving the interview desk in any minute

afuye:
This is easy just make sure u don't buy or sell below or at the given transaction price to make profit U can solve this by iteration of the array given!

Hi interesting question. There's a popular resource called Cracking the Coding interview. Many developers recommends it and I think it's a decent help.

Hope you don't mind my asking, the positions that are testing you with algorithm questions, are they local companies or foreign?