Solved 300 LeetCode Problems but Still Freeze in Interviews? It's a Rehearsal Problem

Solving hundreds of LeetCode problems often fails to prevent freezing during interviews because candidates face a rehearsal problem rather than a knowledge gap. Solo practice lacks the pressure of an observer, the requirement to explain thoughts aloud, and an unpausable clock. A 2020 study by NC State and Microsoft involving 48 computer science students compared those solving problems on a whiteboard while explaining to an interviewer against those working alone to analyze these performance differences.