Pinterest IC15 Phone screen and Onsite

Phone Screen: problem similar to leetcode 815.
Virtual onsite Interview 1 (DS):
Imagine each Pin on Pinterest has a “trending score” associated with it. You’re asked to build a feature which keeps track of all the Pins a user has seen in the last week and at any given time shows the top trending Pin that has been viewed by this user. (ie. Of all the Pins user123 has viewed in the last 24 hours, let them know which one is the most trending now).
Example
A Pin score tracker records scores of Pins that a user has seen and keeps track of the highest scored pin that was viewed in the la

您好！
本帖隐藏的内容需要积分高于 188 才可浏览
您当前积分为 0。
使用VIP即刻解锁阅读权限或查看其他获取积分的方式

游客，您好！
本帖隐藏的内容需要积分高于 188 才可浏览
您当前积分为 0。
VIP即刻解锁阅读权限 或 查看其他获取积分的方式
Unlock interview details and practice with AI
Curated Interview Questions from Top Companies

scoring_pin to get the top scoring pin in the data set. For simplicity let’s imagine it’s the most recent 10 pins. In the example data above, this should return pin_id "981292206280418758"

4) Can you discuss the runtime complexity of each of the above operations for this structure

想问一下具体是哪个岗位呀

RUIest17 发表于 2026-10-12 17:58:29
想问一下具体是哪个岗位呀

This is for Senior Software Engineer position