After 50+ interviews, the author concludes Python is the default choice for 80% of candidates due to its concise syntax and built-in data structures, which save precious time. However, the right language depends on your background and target role, not internet debates.

For Java veterans, sticking with Java avoids the cost of learning Python mid-prep. C++ remains essential for systems, embedded, or competitive programming roles. FAANG companies like Google and Meta accept all three, prioritizing problem-solving over syntax, which debunks the myth that they prefer C++.

Switching languages during preparation is a common mistake that wastes time. Use the language you know best, as interviewers care more about clean code and clear thinking. JavaScript is risky for general roles but acceptable for frontend positions, as it lacks some key data structures.