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推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here’s your problem today. This problem was recently asked by Facebook:

Given a numerator and a denominator, find what the equivalent decimal representation is as a string. If the decimal representation has recurring digits, then put those digits in brackets (ie 4/3 should be represented by 1.(3) to represent 1.333…). Do not use any built in evaluator functions like python’s eval. You can also assume that the denominator will be nonzero.

Here’s some examples and some starter code:

def frac_to_dec(numerator, denominator):
  # Fill this in.

print(frac_to_dec(-3, 2))
# -1.5

print(frac_to_dec(4, 3))
# 1.(3)

print(frac_to_dec(1, 6))
# 0.1(6)