Fastenal Interview Questions — 4 DSA Problems

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

Most frequently asked Fastenal LeetCode questions for software engineering interviews.

• Minimum Window Substring (HARD) — Hash Table, String, Sliding Window
• Sum of Beauty of All Substrings (MEDIUM) — Hash Table, String, Counting
• Last Substring in Lexicographical Order (HARD) — Two Pointers, String
• Number of Atoms (HARD) — Hash Table, String, Stack, Sorting