Pinterest interview notes, page 3 of 24

“Classic BFS/DFS problem and I knew it immediately, which almost made it worse because I rushed into code without talking through edge cases first.” The rest of the author's notes on Software Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The no-float constraint is the whole point of the problem and it took me a minute to internalize why.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The aggregation part was fine, hash map keyed by user ID storing a list of timestamped entries.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Knew this one from grinding leetcode but still fumbled the opening explanation.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, 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 to sort both arrays and just greedily match, but the constraint that boxes push through all prior rooms tripped me up.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Classic overfitting question but it's easy to ramble here.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went with a hash map keyed on (row, col) pairs storing only non-zero values, which felt reasonable.” The rest of the author's notes on Software Engineer interview at Pinterest, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is a meaty one.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one required actual back-of-the-envelope thinking.” The rest of the author's notes on Machine Learning Engineer interview at Pinterest, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I knew what run-length encoding was but hadn't connected it to this problem before.” The rest of the author's notes on Software Engineer interview at Pinterest, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.