Medium data structure and algorithm practice puzzle.
Given the sizes of a C struct's fields, in order, return the struct's total size in bytes. Each field has to start at a multiple of its own size, so add padding before any field that wouldn't. At the end, pad the total up to a multiple of the biggest field. That's why a char, an int, and a char take 12 bytes instead of 6.
Solve it three ways: snap the jigsaw pieces together, fill in the blanks, or type it from scratch against the tests. This one is free.
Every line of the solution comes with a note explaining why it is there, and a step by step replay shows the code running. At level 3, where you type it yourself, you can ask for an AI mock interview on this problem that ends with a hiring manager's scorecard.
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