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

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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

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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?