Cisco

6 problems asked at Cisco.

Easy (3)

Top K Frequent Elements (Leetcode 347)

Arrays, Hashing, Heap...

Two Sum (Leetcode 1)

Two Pointers, Arrays

Valid Parentheses (Leetcode 20)

Stack, Strings

Medium (1)

Group Anagrams (Leetcode 49)

Arrays, Strings, Sorting...

Hard (1)

Largest Rectangle in Histogram (leetcode 84)

Arrays, Stack

Not Specified (1)

Best Time to Buy and Sell Stock

Arrays, DP