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99 lines
3.1 KiB
Markdown
99 lines
3.1 KiB
Markdown
---
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id: 697a49e6ff50d756c9b69364
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title: "Challenge 187: 2026 Winter Games Day 8: Luge"
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challengeType: 29
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dashedName: challenge-187
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---
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# --description--
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Given an array of five numbers, each representing the time (in seconds) it took a luger to complete a segment of a track, determine which segment had the fastest speed and what that speed was.
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The track is divided into the following segments:
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- Segment 1: 320 meters
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- Segment 2: 280 meters
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- Segment 3: 350 meters
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- Segment 4: 300 meters
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- Segment 5: 250 meters
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The first value in the given array corresponds to the time for segment 1, the second value to segment 2, and so on.
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To calculate the speed (in meters per second) for a segment, divide the distance by the time.
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Return `"The luger's fastest speed was X m/s on segment Y."`. Where `X` is the fastest speed, rounded to two decimal places, and `Y` is the segment number where the fastest speed occurred.
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# --hints--
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`get_fastest_speed([9.523, 8.234, 10.012, 9.001, 7.128])` should return `"The luger's fastest speed was 35.07 m/s on segment 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(get_fastest_speed([9.523, 8.234, 10.012, 9.001, 7.128]), "The luger's fastest speed was 35.07 m/s on segment 5.")`)
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}})
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```
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`get_fastest_speed([9.381, 7.417, 9.912, 8.815, 7.284])` should return `"The luger's fastest speed was 37.75 m/s on segment 2."`
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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_fastest_speed([9.381, 7.417, 9.912, 8.815, 7.284]), "The luger's fastest speed was 37.75 m/s on segment 2.")`)
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}})
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```
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`get_fastest_speed([8.890, 7.601, 9.093, 8.392, 6.912])` should return `"The luger's fastest speed was 38.49 m/s on segment 3."`
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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_fastest_speed([8.890, 7.601, 9.093, 8.392, 6.912]), "The luger's fastest speed was 38.49 m/s on segment 3.")`)
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}})
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```
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`get_fastest_speed([8.490, 7.732, 10.103, 8.489, 6.840])` should return `"The luger's fastest speed was 37.69 m/s on segment 1."`
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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_fastest_speed([8.490, 7.732, 10.103, 8.489, 6.840]), "The luger's fastest speed was 37.69 m/s on segment 1.")`)
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}})
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```
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`get_fastest_speed([8.204, 7.230, 9.673, 7.645, 6.508])` should return `"The luger's fastest speed was 39.24 m/s on segment 4."`
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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_fastest_speed([8.204, 7.230, 9.673, 7.645, 6.508]), "The luger's fastest speed was 39.24 m/s on segment 4.")`)
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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_fastest_speed(times):
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return times
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```
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# --solutions--
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```py
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def get_fastest_speed(times):
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distances = [320, 280, 350, 300, 250]
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fastest_speed = 0
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fastest_segment = 0
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for i, t in enumerate(times):
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speed = distances[i] / t
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if speed > fastest_speed:
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fastest_speed = speed
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fastest_segment = i + 1 # 1-indexed
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return f"The luger's fastest speed was {fastest_speed:.2f} m/s on segment {fastest_segment}."
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```
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