How long should I struggle with a DSA problem before checking the solution?

Looking at a solution can be part of learning, but don’t stop at reading it. Study the key idea, identify the clue that reveals the pattern, close the explanation, and recreate the algorithm yourself. It’s also useful to revisit the problem later and solve it again without assistance. Over time, repeated exposure to patterns such as sliding windows will make similar problems much faster.

If you have a deadline, look up the solution sooner so you don’t lose the entire study session. For pure practice, spend some time exploring first, then use the smallest amount of help needed—a hint, a diagram, or the core idea. Immediately copying a complete solution may produce working code, but it usually teaches less than reconstructing it yourself.

A practical limit is around 20–30 minutes if you’re completely stuck, or up to 30–45 minutes if you’re still making meaningful progress. Start with a hint or the general pattern rather than immediately reading the full solution. Then put it away and implement the approach yourself from memory. The point is to learn how to recognize patterns, not to prove that you can independently invent every known algorithm.

Pay attention to whether you’re actually eliminating possibilities, testing ideas, or improving your understanding. If you’re just staring at the same code, repeating failed attempts, or feeling burned out, take a break and come back with fresh eyes. If you still have no direction after that, checking the solution is completely reasonable—just focus on understanding the logic and how you could recognize the same approach in a future problem.