Rakuten Interview Questions — 6 DSA Problems

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

Most frequently asked Rakuten LeetCode questions for software engineering interviews.

• Longest Happy String (MEDIUM) — String, Greedy, Heap (Priority Queue)
• Best Time to Buy and Sell Stock II (MEDIUM) — Array, Dynamic Programming, Greedy
• Best Time to Buy and Sell Stock (EASY) — Array, Dynamic Programming
• LRU Cache (MEDIUM) — Hash Table, Linked List, Design, Doubly-Linked List
• Rotate Image (MEDIUM) — Array, Math, Matrix
• 3Sum (MEDIUM) — Array, Two Pointers, Sorting