Duolingo Interview Questions — 4 DSA Problems

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

Most frequently asked Duolingo LeetCode questions for software engineering interviews.

• Encrypt and Decrypt Strings (HARD) — Array, Hash Table, String, Design, Trie
• Minimum Number of People to Teach (MEDIUM) — Array, Hash Table, Greedy
• K Radius Subarray Averages (MEDIUM) — Array, Sliding Window
• Task Scheduler II (MEDIUM) — Array, Hash Table, Simulation