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106 lines
2.3 KiB
Markdown
106 lines
2.3 KiB
Markdown
---
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id: 69c5f3d787b1725d5f00c8ba
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title: "Challenge 256: Closest Time Direction"
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challengeType: 29
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dashedName: challenge-256
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---
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# --description--
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Given two times, determine whether you can get from the first to the second faster by moving forward or backward.
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- Times are given in 24-hour format (`"HH:MM"`)
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- The clock wraps around (23:59 goes to 00:00 when moving forward, and 00:00 goes to 23:59 when moving backwards)
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Return:
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- `"forward"` if moving forward is shorter
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- `"backward"` if moving backward is shorter
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- `"equal"` if both directions take the same amount of time
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# --hints--
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`get_direction("10:00", "12:00")` should return `"forward"`.
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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(get_direction("10:00", "12:00"), "forward")`)
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}})
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```
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`get_direction("11:00", "05:00")` should return `"backward"`.
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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(get_direction("11:00", "05:00"), "backward")`)
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}})
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```
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`get_direction("00:00", "12:00")` should return `"equal"`.
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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(get_direction("00:00", "12:00"), "equal")`)
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}})
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```
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`get_direction("15:45", "01:10")` should return `"forward"`.
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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(get_direction("15:45", "01:10"), "forward")`)
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}})
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```
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`get_direction("03:30", "19:50")` should return `"backward"`.
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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(get_direction("03:30", "19:50"), "backward")`)
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}})
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```
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`get_direction("06:30", "18:30")` should return `"equal"`.
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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(get_direction("06:30", "18:30"), "equal")`)
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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 get_direction(time1, time2):
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return time1
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```
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# --solutions--
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```py
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def get_direction(time1, time2):
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def to_minutes(t):
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h, m = map(int, t.split(':'))
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return h * 60 + m
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start = to_minutes(time1)
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end = to_minutes(time2)
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forward = (end - start + 1440) % 1440
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backward = (start - end + 1440) % 1440
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if forward < backward:
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return 'forward'
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if backward < forward:
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return 'backward'
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return 'equal'
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```
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