Salesforce

The 30 Salesforce interview problems asked most — recent (last six months) first, then all-time frequency — grouped by pattern.

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Arrays & Hashing

Maximum Product of Three Numbers↻Easy
Subarray Sum Equals K↻Medium

Sliding Window

Fruit Into Baskets↻Medium

Stack

Asteroid Collision↻Medium

Linked List

LRU Cache↻Medium
Merge K Sorted Lists↻Hard

Trees

Amount of Time for Binary Tree to Be Infected↻Medium

Heap / Priority Queue

Design Twitter↻Medium

Backtracking

Generate Parentheses↻Medium

Graphs

Course Schedule II↻Medium
Rotting Oranges↻Medium

Intervals

Merge Intervals↻Medium
Meeting Rooms II↻Medium

Math & Geometry

Angle Between Hands of a Clock↻Medium

Bit Manipulation

Partition Array Into Two Arrays to Minimize Sum Difference↻Hard