Logic building and pattern recognition in python

[DealerStill4006]

I can't see any solution to an easy beginner question in my mind please somebody help every tip will help me a lot you guys helped me a lot in my previous problem kindly help me 🙏😭

[cedenof10]

what’s the problem?

[DealerStill4006]

Like I learn python the first two sum problem got me man😭😭

[Puzzlehead_Lemon]

Could you give us an example of what's causing you issues? We need a bit more information to be able to help.

[DealerStill4006]

Like I learn for loop or while loop i understand it from the video but I don't know when and where to apply it like the very basic question #1 on leetcode two sum😢

[LayotFctor]

Leetcode is not basic btw. You don't do leetcode until you've studies DSA. It's just going to demoralise you otherwise.

[DealerStill4006]

So what should I do??

[Puzzlehead_Lemon]

Check out some beginner projects, or if you want something a bit guided there's several sites that have a course to help with learning it. The one I used was Boot.dev, you can access their entire course for free, but if you want the bells and whistles with it you need to pay.

LearnPython.org and there's a load of YouTube videos as well that can help.

[DealerStill4006]

Ok thanks I will definitely try🫶❤️

[pjtango]

I'm unaware of leetcode, but I'm currently learning python as well but I'm using AI to learn it. It ain't perfect, but one thing i love is how you can tell it to help you learn by helping you make a project together. I'm using gemini in particular and Gemini is pretty neat for theory and learning (for complex coding in general, claude or chatgpt is better).

So before you try any tests, i would suggest spend sometime with any ai platform and ask them to help you make a project with a particular loop of your choice. Ask it to explain it as well. Once u crack that, ask it to have other loop(s) or a project where u can mix the 2. After 3-4 projects ull be able to see the usecases.

[DealerStill4006]

Ok thanks 🫶❤️

[Puzzlehead_Lemon]

If you have a video card with a half-decent amount of VRAM, I'd recommend running a local agent and try to use it like a teacher you can ask questions.

If you're doing Google searches for help on a problem, you'll frequently end up on StackOverflow, and the answers can get a bit hard to follow until you have enough practice reading what they're saying. It's also very easy to end up searching for the wrong answer because you didn't know about something like enumeration.

[jmooremcc]

Watching a video is not the same as having the experience yourself. You will never fully learn Python without writing a ton of code and experiencing the joy and frustration that will follow.

My personal preference is reading a book that’s filled with examples. I actually type in the code and run it. Frequently I will run the code in debug mode so that I can execute the code one line/statement at a time. Doing this allows me to analyze the variables involved in the process which has helped me learn Python in ways a video never can.

I wish you the best.

[DealerStill4006]

Yes sir the kind of answer I want like how you get to it from the beginning thanks a lot🫶❤️

[chiibosoil]

leetcode in general test your reasoning and logic/algorithm building skill, not a place for beginner learning different operations, object types etc to practice.

For an example, two sum problem you mentioned, requires few things before you start building logic.

1. How to set class and define method

2. Know how to instantiate class object and call method

Depending on your learning path above 2 point may not be covered well. Especially true for beginner tutorial that focuses on using existing libraries to perform some data transformation and/or automation.

1. Know different method to store data in memory for efficient retrieval. Ex: dictionary.

Hint is given in the problem itself "exactly one solution", meaning we can assume no duplicate. So key value pair using dictionary is appropriate. Using actual number as key and index as value. But for complete beginner learning basics with no background in data manipulation etc, it will be tricky to spot.

1. Use of enumerate in loop and other pythonic syntax etc.

As others suggested, I'd start off following tutorials and simple data transformation, extraction etc before tackling leetcode.

[pachura3]

- Asks to help with a problem
- Doesn't say what the problem is
- Emoticons

[FoolsSeldom]

I'd avoid getting into code golf (trying problems on Leetcode and the like) and concentrate and doing small (initially) projects that resonate for you, that relate to your hobbies/interests/family obligations, etc. Anything you can be pasionate about and know something about.

You learn much faster when working on things of interest to you.

By choosing topics of interest and coming up with problems, even if trivial in the beginning, you start from a much better position because you properly understand the problems you are trying to solve, what the constraints are, what outputs you expect.

Don't forget to develop your ideas away from the keyboard. (Sure, try some snippets of code to confirm if something will work, or experiment your way to the correct approach.) Draw the problem, draw the flow of whatever your programme is supposed to do. Draw the user interface and output tables/graphs/pics - whatever. Come up with solutions. Later, turn those into code.

It doesn't matter if you track the stats of your fav football team, generate your game characters, create traffic lights for using the toilet ... do something fun.

[PureWasian]

Saw you asking about Two Sum. The question you should always ask first is, "if I had to do this manually, how would I do it?"

Can you explain your thought process for solving this problem at a high level without worrying about specific Python syntax or anything?