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HardPrep Room Coding #1911

Floating-point equality check

Code reviewCode quality & reviewSenior–Staff~20 min

Review this Python reconciliation check that a list of per-strategy allocation fractions sums to 1.0 before placing orders.

`weights` are fractions like `[0.1, 0.2, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]` that mathematically total 1.0.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 20 min
Mark a line and say what kind of problem it is.0 findings
1def is_fully_allocated(weights):
2 total = 0.0
3 for w in weights:
4 total += w
5 return total == 1.0
6 
7def place_book(weights, orders):
8 if not is_fully_allocated(weights):
9 raise ValueError("allocation must sum to 100%")
10 for w, o in zip(weights, orders):
11 submit(o, size=w)
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.