Robinhood Interview Questions — 15 DSA Problems

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

Most frequently asked Robinhood LeetCode questions for software engineering interviews.

• Number of Orders in the Backlog (MEDIUM) — Array, Heap (Priority Queue), Simulation
• Restore the Array From Adjacent Pairs (MEDIUM) — Array, Hash Table, Depth-First Search
• Brightest Position on Street (MEDIUM) — Array, Sorting, Prefix Sum, Ordered Set
• Count Good Meals (MEDIUM) — Array, Hash Table
• Ways to Split Array Into Three Subarrays (MEDIUM) — Array, Two Pointers, Binary Search, Prefix Sum
• Check if There is a Valid Path in a Grid (MEDIUM) — Array, Depth-First Search, Breadth-First Search, Union Find, Matrix
• Capital Gain/Loss (MEDIUM) — Database
• Count the Number of Consistent Strings (EASY) — Array, Hash Table, String, Bit Manipulation, Counting
• Top K Frequent Words (MEDIUM) — Array, Hash Table, String, Trie, Sorting, Heap (Priority Queue), Bucket Sort, Counting
• Text Justification (HARD) — Array, String, Simulation
• Best Time to Buy and Sell Stock (EASY) — Array, Dynamic Programming
• Minesweeper (MEDIUM) — Array, Depth-First Search, Breadth-First Search, Matrix
• Defanging an IP Address (EASY) — String
• Top K Frequent Elements (MEDIUM) — Array, Hash Table, Divide and Conquer, Sorting, Heap (Priority Queue), Bucket Sort, Counting, Quickselect
• Employee Importance (MEDIUM) — Array, Hash Table, Tree, Depth-First Search, Breadth-First Search