Pinterest software engineer interviews cover algorithms, data structures, system design, and coding problems drawn from real interview rounds.
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coding
Hard
Verified Question
#1
1. Compressed Grid Operations
Category: Matrix coding problemDesign a
CompressedGrid class that stores a sparse integer matrix efficiently by keeping only non-zero values in memory. The class must support...Input: Matrix (2D array)Output: Computed result
coding
Hard
Verified Question
#2
2. Run Length Decode All
Category: Graph coding problemA signal log is compressed using run-length encoding. In this scheme, a source string of digits is scanned left to right, and each run of identical...Input: Graph (nodes and edges)
Output: Array
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