Pinduoduo interview notes, page 2 of 3

“My first instinct was to just do a self-join on the date range and count rows, but that doesn't actually capture the 'consecutive' part properly.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The core logic isn't bad once you bucket by suit and sort.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Thought I had this cold but mid-answer I realized I was just listing techniques without connecting them to the actual problem.” The rest of the author's notes on Machine Learning Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is where it fell apart.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“My first instinct was brute force, loop through each query element, find its position in nums, then scan right.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“My first instinct was brute force, just scan right for each element and call it a day.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is where the whole interview lives or dies.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The encoding tripped me up more than the actual logic.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Online Assessment (OA) round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Started fine with the decomposition (bias squared plus variance plus irreducible noise) but then fumbled a bit when they pushed on the diagnosis part.” The rest of the author's notes on Machine Learning Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Classic problem but they threw a twist on it.” The rest of the author's notes on Software Engineer interview at Pinduoduo, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.