Salesforce

12 problems asked at Salesforce.

Easy (3)

Leetcode 1710 — Maximum Units on a Truck

Greedy, Sorting

Two Sum (Leetcode 1)

Two Pointers, Arrays

Valid Parentheses (Leetcode 20)

Stack, Strings

Medium (4)

Gas Station (Leetcode 134)

Arrays, Greedy, Prefix Sum

Group Anagrams (Leetcode 49)

Arrays, Strings, Sorting...

Longest Substring Without Repeating Characters (leetcode 3)

Sliding Window, Strings, Hashing

Min Stack (Leetcode 155)

Stack

Hard (4)

Largest Rectangle in Histogram (leetcode 84)

Arrays, Stack

Maximal Rectangle (Leetcode 85) (largest rectangle with all 1's)

Matrix, Stack

Next Permutation (Leetcode 31)

Arrays, Greedy, Two Pointers

Trapping Rain Water (LC 42)

Two Pointers, Prefix and Suffix Arrays, Stack

Not Specified (1)

Best Time to Buy and Sell Stock

Arrays, DP