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89 lines
1.6 KiB
Markdown
89 lines
1.6 KiB
Markdown
---
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id: 68cae5b538ff798bbd4da002
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title: "Challenge 64: 24 to 12"
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challengeType: 29
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dashedName: challenge-64
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---
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# --description--
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Given a string representing a time of the day in the 24-hour format of `"HHMM"`, return the time in its equivalent 12-hour format of `"H:MM AM"` or `"H:MM PM"`.
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- The given input will always be a four-digit string in 24-hour time format, from `"0000"` to `"2359"`.
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# --hints--
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`to_12("1124")` should return `"11:24 AM"`.
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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(to_12("1124"), "11:24 AM")`)
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}})
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```
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`to_12("0900")` should return `"9:00 AM"`.
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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(to_12("0900"), "9:00 AM")`)
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}})
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```
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`to_12("1455")` should return `"2:55 PM"`.
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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(to_12("1455"), "2:55 PM")`)
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}})
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```
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`to_12("2346")` should return `"11:46 PM"`.
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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(to_12("2346"), "11:46 PM")`)
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}})
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```
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`to_12("0030")` should return `"12:30 AM"`.
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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(to_12("0030"), "12:30 AM")`)
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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 to_12(time):
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return time
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```
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# --solutions--
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```py
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def convert_hours(hours):
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if hours == 0:
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return 12
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elif hours > 12:
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return hours - 12
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else:
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return hours
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def to_12(time):
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hours = int(time[:2])
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minutes = time[2:]
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period = "AM" if hours < 12 else "PM"
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return f"{convert_hours(hours)}:{minutes} {period}"
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```
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