I could still use some good resources. I tried finding a few tutorials/blogs and they're pretty good, my main concern is now how do i clean the data i get from scraping. A good tutorial/blog might help. There is too much gibberish data I end up scraping along with useful one, -
doing dsa i realise all it is is patterns after all, i'm making this note cheatsheet I'll update. Does anyone know any platform I could update at all times instead of sharing this read only link?
https://t.co/Eb9ERfnFh9
It's 10 am, we're back at the library, seminar at 11. Let's study for one hour. I still don't have my college id so no wifi for me, will have to use mobile net hopefully it won't run out. Let's #lockin
Combination Sum isnโt just about sums.
Itโs about learning the rhythm of recursion + undoing choices.
Once you feel this flow, backtracking problems stop looking scary
Combination Sum problem:
Just solved this question called combination sum which was based on the pattern of backtracking. Letโs unpack how recursion + undoing choices builds all valid combinations.
This pattern is universal in backtracking:
choose โ explore โ un-choose
Itโs the same skeleton youโll see in:
- Subsets
- Permutations
- N-Queens
- Word Search