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89 lines
1.7 KiB
Markdown
89 lines
1.7 KiB
Markdown
---
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id: 69a890af247de743333bd4ce
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title: "Challenge 225: No Consecutive Repeats"
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challengeType: 29
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dashedName: challenge-225
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---
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# --description--
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Given a string, determine if it has no repeating characters.
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- A string has no repeats if it does not have the same character two or more times in a row.
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# --hints--
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`has_no_repeats("hi world")` should return `True`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("hi world"), True)`)
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}})
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```
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`has_no_repeats("hello world")` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("hello world"), False)`)
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}})
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```
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`has_no_repeats("abcdefghijklmnopqrstuvwxyz")` should return `True`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("abcdefghijklmnopqrstuvwxyz"), True)`)
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}})
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```
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`has_no_repeats("freeCodeCamp")` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("freeCodeCamp"), False)`)
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}})
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```
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`has_no_repeats("The quick brown fox jumped over the lazy dog.")` should return `True`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("The quick brown fox jumped over the lazy dog."), True)`)
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}})
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```
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`has_no_repeats("Mississippi")` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(has_no_repeats("Mississippi"), False)`)
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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 has_no_repeats(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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def has_no_repeats(s):
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for i in range(1, len(s)):
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if s[i] == s[i-1]:
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return False
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return True
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```
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