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124 lines
2.9 KiB
Markdown
124 lines
2.9 KiB
Markdown
---
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id: 699c8e045ee7cb94ed2322d6
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title: "Challenge 215: Parking Fee Calculator"
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challengeType: 29
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dashedName: challenge-215
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---
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# --description--
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Given two strings representing the time you parked your car and the time you picked it up, calculate the parking fee.
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- The given strings will be in the format `"HH:MM"` using a 24-hour clock. So `"14:00"` is 2pm for example.
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- The first string will be the time you parked your car, and the second will be the time you picked it up.
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- If the pickup time is earlier than the entry time, it means the parking spanned past midnight into the next day.
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Fee rules:
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- Each hour parked costs $3.
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- Partial hours are rounded up to the next full hour.
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- If the parking spans overnight (past midnight), an additional $10 overnight fee is applied.
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- There is a minimum fee of $5 (only used if the total would be less than $5).
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Return the total cost in the format `"$cost"`, `"$5"` for example.
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# --hints--
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`calculate_parking_fee("09:00", "11:00")` should return `"$6"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("09:00", "11:00"), "$6")`)
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}})
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```
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`calculate_parking_fee("10:00", "10:30")` should return `"$5"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("10:00", "10:30"), "$5")`)
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}})
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```
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`calculate_parking_fee("08:10", "10:45")` should return `"$9"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("08:10", "10:45"), "$9")`)
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}})
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```
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`calculate_parking_fee("14:40", "23:10")` should return `"$27"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("14:40", "23:10"), "$27")`)
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}})
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```
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`calculate_parking_fee("18:15", "01:30")` should return `"$34"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("18:15", "01:30"), "$34")`)
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}})
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```
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`calculate_parking_fee("11:11", "11:10")` should return `"$82"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_parking_fee("11:11", "11:10"), "$82")`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def calculate_parking_fee(park_time, pickup_time):
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return park_time
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```
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# --solutions--
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```py
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import math
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def calculate_parking_fee(park_time, pickup_time):
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def to_minutes(time_str):
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hours, minutes = map(int, time_str.split(":"))
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return hours * 60 + minutes
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entry_minutes = to_minutes(park_time)
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exit_minutes = to_minutes(pickup_time)
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overnight = False
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if exit_minutes < entry_minutes:
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overnight = True
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total_minutes = (24 * 60 - entry_minutes) + exit_minutes
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else:
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total_minutes = exit_minutes - entry_minutes
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hours = math.ceil(total_minutes / 60)
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cost = hours * 3
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if overnight:
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cost += 10
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if cost < 5:
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cost = 5
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return f"${cost}"
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```
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