Mercari Coding Interview Questions

We track 6 coding questions asked at Mercari, tagged with the algorithms and concepts they test. The most common: Array, Greedy, Hash Table, Math, String.

Browse all 6 Mercari questions →

Concept mix

Each question's weight is split evenly across its concepts, so the shares sum to 100%.

Greedy18.1%
Math18.1%
Array15.3%
Hash Table15.3%
String11.1%
Counting5.6%
Design5.6%
Sorting5.6%
Stack5.6%

How many questions involve each concept

Share of all 6 tracked Mercari questions that touch each concept. Questions usually involve several, so these overlap.

Array50.0%
Greedy50.0%
Hash Table50.0%
Math50.0%
String33.3%
Counting16.7%
Design16.7%
Sorting16.7%
Stack16.7%

Where Mercari differs from the average company

Concept weight at Mercari relative to the average across all companies we track. Green means Mercari leans on it harder than most.

Greedy6.0×
Math3.2×
Hash Table2.3×
String1.2×
Array0.79×

Mercari specialties

Concepts that show up at Mercari but are rarely asked elsewhere. They are easy to get blindsided by.

Counting16.7% here · 4.1% avg

Difficulty mix

Level split of the 6 tracked Mercari questions.

Junior50% (3)
Mid/Senior50% (3)

Every concept in Mercari interviews

Concept	Questions	% of questions	Share of mix
Array	3	50.0%	15.3%
Greedy	3	50.0%	18.1%
Hash Table	3	50.0%	15.3%
Math	3	50.0%	18.1%
String	2	33.3%	11.1%
Counting	1	16.7%	5.6%
Design	1	16.7%	5.6%
Sorting	1	16.7%	5.6%
Stack	1	16.7%	5.6%

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