LinkedIn

6 problems asked at LinkedIn.

Easy (2)

Two Sum (Leetcode 1)

Two Pointers, Arrays

Valid Parentheses (Leetcode 20)

Stack, Strings

Medium (1)

Min Stack (Leetcode 155)

Stack

Hard (3)

Largest Rectangle in Histogram (leetcode 84)

Arrays, Stack

Postfix to Infix & Evaluation of Postfix (Leetcode 150)

Stack

Repeating Element (Cycle + Expected Sum appr.)

Arrays, Two Pointers, Linked Lists