ByteDance | Software Engineer Intern | unknown
Timeline: 2026(Jan - Mar) • Intern • unknown • unknown
The interview process at ByteDance starts with an initial online assessment, which consists of coding questions. Candidates are typically provided with a time limit to complete the tasks. During my interview, the first question was about calculating the prefix sum of an array. After successfully completing the coding challenge, I was then invited for a technical phone interview.
In the phone interview, we discussed some design principles, and I was asked behavioral questions regarding my previous experiences. The interviewer was very friendly and encouraged me to ask questions throughout the process, which made the atmosphere quite comfortable.
After the interview, I received feedback relatively quickly, which I appreciated. Overall, it was a positive experience, and the interviewers seemed genuinely interested in understanding my thought process during the coding challenges and discussions.
Interview Questions
Prefix Sum
Given an array of integers, calculate the prefix sum such that each element at index i stores the sum of elements from index 0 to i in the array.
Difficulty: Easy | Reference: LC-303 | Tags: array, prefix sum