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53 lines
994 B
Markdown
53 lines
994 B
Markdown
---
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id: 68b7cadffed0e75a517da671
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title: "Challenge 51: Phone Number Formatter"
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challengeType: 29
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dashedName: challenge-51
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---
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# --description--
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Given a string of eleven digits, return the string as a phone number in this format: `"+D (DDD) DDD-DDDD"`.
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# --hints--
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`format_number("05552340182")` should return `"+0 (555) 234-0182"`.
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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(format_number("05552340182"), "+0 (555) 234-0182")`)
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}})
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```
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`format_number("15554354792")` should return `"+1 (555) 435-4792"`.
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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(format_number("15554354792"), "+1 (555) 435-4792")`)
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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 format_number(number):
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return number
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```
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# --solutions--
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```py
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def format_number(number):
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country = number[0]
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area = number[1:4]
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prefix = number[4:7]
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line = number[7:]
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return f"+{country} ({area}) {prefix}-{line}"
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```
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