Nextdoor Interview Questions — 8 DSA Problems

7 problems with full solutions in Python, Java, C++, JavaScript, Go, Rust.

Most frequently asked Nextdoor LeetCode questions for software engineering interviews.

• Compare Version Numbers (MEDIUM) — Two Pointers, String
• All O`one Data Structure (HARD) — Hash Table, Linked List, Design, Doubly-Linked List
• Merge Intervals (MEDIUM) — Array, Sorting
• Letter Combinations of a Phone Number (MEDIUM) — Hash Table, String, Backtracking
• Trapping Rain Water (HARD) — Array, Two Pointers, Dynamic Programming, Stack, Monotonic Stack
• Nested List Weight Sum (MEDIUM) — Depth-First Search, Breadth-First Search
• Divide Two Integers (MEDIUM) — Math, Bit Manipulation
• Time Based Key-Value Store (MEDIUM) — Hash Table, String, Binary Search, Design