The Amazon software engineering interview process typically begins with a HackerRank-style screening test to assess core programming and problem-solving skills. Successful candidates move on to live coding interviews, where they tackle algorithmic challenges in real time. The process also includes a system design interview to evaluate architectural thinking, as well as a leadership principles interview and, finally, a Bar Raiser evaluation.

Given an array of integers, return the length of the longest subarray with a sum equal to 0.