I haven't done many Leet Code-style interviews, but the ones I have are usually simple-ish problems I'd have no difficulty with under normal circumstances, and

I haven't done many Leet Code-style interviews, but the ones I have are usually simple-ish problems I'd have no difficulty with under normal circumstances, and yet I fail them at least 50% of the time. There are a couple of things at play here: 1. I'm regularly complimented on how sharp my mind is, but I can't reliably recruit that sharpness on-demand. If I get any kind of brain fog during a timed problem (with no opportunity for a break), it's game over. 2. Coding in an unfamiliar environment, like Coderpad. The problems are hard enough to make them easy to fail if you can't spot a good approach immediately, but easy enough that a "good" answer gives very little signal relative to the time being dedicated to the problem. I've done interview processes where 50% of the total process is given over to these kinds of problems, and the process concluded with me feeling I didn't get any real opportunity to demonstrate my strengths.