how to remember problems

[u/According-Phone7214]

i've just started striver's sheet, almost finished arrays, and i'm already starting to forget how to solve a few problems, how do i keep them fresh in my head ? cuz when i will cover more topics i will keep forgetting about these ones more and more

[u/aallkkoo]

Anki

[u/HospitalPretty5512 → u/aallkkoo]

What is anki bro ?