Roblox

4 problems asked at Roblox.

Easy (2)

Two Sum (Leetcode 1)

Two Pointers, Arrays

Valid Parentheses (Leetcode 20)

Stack, Strings

Hard (2)

Largest Rectangle in Histogram (leetcode 84)

Arrays, Stack

Trapping Rain Water (LC 42)

Two Pointers, Prefix and Suffix Arrays, Stack