You should learn the book "Cracking the Coding Interview." Nowadays, that's the way to go if you want to get any job in a tech company. The presented problems were of intermediate difficulty.
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The following metrics were computed from 2 interview experiences for the Amazon Software Development Intern role in Madrid, Spain.
Amazon's interview process for their Software Development Intern roles in Madrid, Spain is extremely selective, failing the vast majority of engineers.
Candidates reported having mixed feelings for Amazon's Software Development Intern interview process in Madrid, Spain.