Algo challenges!

Challenge yourself!

How to participate?

• clone this repo
• install npm dependencies npm i
• run it! npm start

And then, try to solve some algos:

• challenges are located in the ./src/challenges folder
• each challenge folder (from A1 to B5) contains a challenge! You'll find for each challenge :
  • an answer.ts file with the challenge explaination, and the function to fill!
  • an input.ts file with the input that will be used!
  • an output.ts file with the output expected
• choose the challenge you want to work on, uncomment the export default function ... in the answer.ts file and try to solve it! Don't hesitate to read the challenge explaination and take a look, if needed to the input.ts and output.ts files!

When you think you'r good, then just save you answers.ts file and check the result in the console! If the live reloading is not working anymore, just relaunch it!

Difficulties

• Challenges A1, A2, B1, B2 are quite easy
• Challenges A3 and B3 are medium level
• Challenges A4, A5, B4, B5 are pretty hard

Example

I did clone the repo, I did run npm i inside the repo and finally, I did run npm start! I'm ready to rock!

I want to work on the ./src/challenges/demo challenge. I open ./src/challenges/demo/answer.ts file to read the instructions, I take a look at the interfaces used at the end of the file. I'm still not completly sure about what I have to do, so I glance at ./src/challenges/input.ts and ./src/challenges/demo/ouput.ts files to see what will be submitted to my function, and what is the expected result!

Oh I understood what I have to do! So I uncomment the export default... lines and I put some logic into the function body! Like:

export default function ({ topics }: { topics: Topic[] }): Topic[] {
    return topics.sort((a, b) => a.upvotes > b.upvotes ? -1 : 1);
}

I press Ctrl+S, and I look at the terminal. Something went wrong, I can see that my output is reversed-sorted! How dummy I am! I just have to switch -1 and 1 in my condition!

export default function ({ topics }: { topics: Topic[] }): Topic[] {
    return topics.sort((a, b) => a.upvotes > b.upvotes ? 1 : -1);
}

I press Ctrl+S, and I look at the terminal: Congrats!!

Now, I just have to fill out the next 10 challenges 😂

Types

All the challenges are strongly typed, take a look at the interfaces definition to get more information! Each challenge folder contains its own interfaces.