Google interview notes, page 141 of 215

“I went straight for union-find and it worked, but I wasted probably five minutes convincing myself it was the right tool when BFS over adjacency would've been cleaner to explain out loud.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I jumped straight to a brute force O(n^2) approach using slope comparisons and thought I was done.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one wrecked me.” The rest of the author's notes on Software Engineer interview at Google, Onsite - Multi Round round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is the Von Neumann trick and I blanked on the name but remembered the logic: flip twice, if you get HT treat it as heads, TH as tails, and discard HH or TT.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“My instinct was to say the DMZ server because it's internet-facing and more exposed.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I picked something I thought was safe and relatable but then realized mid-answer I had no real structure for the 'improvement' part.” The rest of the author's notes on Product Manager interview at Google, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The dedup part is straightforward with a set, but I'd probably reach for a defaultdict of sets and then just take the lengths at the end.” The rest of the author's notes on Software Engineer interview at Google, 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 jump straight to funnel analysis, which wasn't wrong but I skipped a step: clarifying what 25% even means relative to baseline.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“BFS with a flag to flip direction each level.” The rest of the author's notes on Software Engineer interview at Google, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The example makes it look straightforward but I spent way too long second-guessing whether to use a set for seen IDs or try to be clever with ordering.” The rest of the author's notes on Software Engineer interview at Google, Onsite - Coding / Algorithms round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.