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Challenge 181: 2026 Winter Games Day 2: Snowboarding

curriculum/challenges/english/blocks/daily-coding-challenges-python/697a49e6ff50d756c9b6935e.md

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--description--

Given a snowboarder's starting stance and a rotation in degrees, determine their landing stance.

  • A snowboarder's stance is either "Regular" or "Goofy".
  • Trick rotations are multiples of 90 degrees. Positive indicates clockwise rotation, and negative indicate counter-clockwise rotation.
  • The landing stance flips every 180 degrees of rotation.

For example, given "Regular" and 90, return "Regular". Given "Regular" and 180 degrees, return "Goofy".

--hints--

get_landing_stance("Regular", 90) should return "Regular".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Regular", 90), "Regular")`)
}})

get_landing_stance("Regular", 180) should return "Goofy".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Regular", 180), "Goofy")`)
}})

get_landing_stance("Goofy", -270) should return "Regular".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Goofy", -270), "Regular")`)
}})

get_landing_stance("Regular", 2340) should return "Goofy".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Regular", 2340), "Goofy")`)
}})

get_landing_stance("Goofy", 2160) should return "Goofy".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Goofy", 2160), "Goofy")`)
}})

get_landing_stance("Goofy", -540) should return "Regular".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_landing_stance("Goofy", -540), "Regular")`)
}})

--seed--

--seed-contents--

py
def get_landing_stance(start_stance, rotation):

    return start_stance

--solutions--

py
def get_landing_stance(start_stance, rotation):
    flips = abs(rotation) // 180
    if flips % 2 == 0:
        return start_stance
    else:
        return "Goofy" if start_stance == "Regular" else "Regular"