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71 lines
1.5 KiB
Markdown
71 lines
1.5 KiB
Markdown
---
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id: 699c8e045ee7cb94ed2322db
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title: "Challenge 220: Largest Number"
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challengeType: 29
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dashedName: challenge-220
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---
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# --description--
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Given a string of numbers separated by various punctuation, return the largest number.
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- The given string will only contain numbers and separators.
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- Separators can be commas (`","`), exclamation points (`"!"`), question marks (`"?"`), colons (`":"`), or semi-colons (`";"`).
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# --hints--
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`largest_number("1,2")` should return `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(largest_number("1,2"), 2)`)
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}})
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```
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`largest_number("4;15:60,26?52!0")` should return `60`.
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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(largest_number("4;15:60,26?52!0"), 60)`)
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}})
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```
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`largest_number("-402,-1032!-569:-947;-633?-800!-1012;-402,-723?-8102!-3011")` should return `-402`.
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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(largest_number("-402,-1032!-569:-947;-633?-800!-1012;-402,-723?-8102!-3011"), -402)`)
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}})
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```
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`largest_number("12;-50,99.9,49.1!-10.1?88?16")` should return `99.9`.
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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(largest_number("12;-50,99.9,49.1!-10.1?88?16"), 99.9)`)
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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 largest_number(s):
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return s
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```
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# --solutions--
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```py
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import re
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def largest_number(s):
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numbers = [float(n) for n in re.split(r'[,!?:;]', s)]
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return max(numbers)
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```
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