Technical Screen

A Trie Backtracking Bug I Never Fixed

SnowflakeSoftware Engineer · Technical Screen · Sep 2025

First round: the interviewer — I really feel bad, she kept trying to help me the whole time, but in the end I still didn't get the bug fixed within the hour. The input is a string array: [California, California/San Francisco, California/San Francisco/7th Street], etc. The other input is an array of the nodes to delete, e.g. [California/San Francisco], and the return should be [California]. LeetCo…

Shared by a candidate · reported Sep 2025. Interview formats change; use it as a guide, not a script.