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103 lines
2.2 KiB
Markdown
103 lines
2.2 KiB
Markdown
---
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id: 69373793f5a867f769cde136
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title: "Challenge 151: Sorted Array?"
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challengeType: 29
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dashedName: challenge-151
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---
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# --description--
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Given an array of numbers, determine if the numbers are sorted in ascending order, descending order, or neither.
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If the given array is:
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- In ascending order (lowest to highest), return `"Ascending"`.
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- In descending order (highest to lowest), return `"Descending"`.
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- Not sorted in ascending or descending order, return `"Not sorted"`.
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# --hints--
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`is_sorted([1, 2, 3, 4, 5])` should return `"Ascending"`.
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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(is_sorted([1, 2, 3, 4, 5]), "Ascending")`)
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}})
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```
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`is_sorted([10, 8, 6, 4, 2])` should return `"Descending"`.
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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(is_sorted([10, 8, 6, 4, 2]), "Descending")`)
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}})
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```
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`is_sorted([1, 3, 2, 4, 5])` should return `"Not sorted"`.
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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(is_sorted([1, 3, 2, 4, 5]), "Not sorted")`)
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}})
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```
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`is_sorted([3.14, 2.71, 1.61, 0.57])` should return `"Descending"`.
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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(is_sorted([3.14, 2.71, 1.61, 0.57]), "Descending")`)
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}})
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```
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`is_sorted([12.3, 23.4, 34.5, 45.6, 56.7, 67.8, 78.9])` should return `"Ascending"`.
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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(is_sorted([12.3, 23.4, 34.5, 45.6, 56.7, 67.8, 78.9]), "Ascending")`)
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}})
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```
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`is_sorted([0.4, 0.5, 0.3])` should return `"Not sorted"`.
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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(is_sorted([0.4, 0.5, 0.3]), "Not sorted")`)
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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 is_sorted(arr):
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return arr
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```
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# --solutions--
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```py
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def is_sorted(arr):
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ascending = True
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descending = True
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for i in range(1, len(arr)):
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if arr[i] < arr[i - 1]:
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ascending = False
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if arr[i] > arr[i - 1]:
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descending = False
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if ascending:
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return "Ascending"
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if descending:
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return "Descending"
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return "Not sorted"
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```
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