Salesforce Coding Interview Questions
100 Salesforce coding interview problems with full optimal solutions — 30 easy, 50 medium, 20 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Salesforce interviewer values, and a FAQ section.
Showing 5 problems of 100
- #83hardfrequently asked
83. Merge k Sorted Lists
Merge k sorted linked lists into one sorted list. Salesforce uses this directly in their Bulk API result aggregation across multiple partitions.
- #88hardfrequently asked
88. Trapping Rain Water
Compute how much rainwater can be trapped between bars. Salesforce uses this as a two-pointer/precomputed-max stress test — they use the same pattern in their forecast capacity buffers.
- #93hardfrequently asked
93. Insert Interval
Insert a new interval into a sorted, non-overlapping list and merge as needed. Salesforce uses this directly in their Calendar app's event insertion.
- #96hardfrequently asked
96. Minimum Window Substring
Find the smallest substring containing all characters of a target string. Salesforce uses this as the canonical hard sliding-window problem.
- #99hardfrequently asked
99. Serialize and Deserialize Binary Tree
Design an algorithm to serialize/deserialize a binary tree. Salesforce uses this as the canonical 'design your own format' problem — they use similar serialization in their metadata-export pipeline.
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