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Recursion: Fix the factorial text/implementation
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lessons/beginners/recursion/index.md

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@@ -132,15 +132,15 @@ součin všech čísel od 1 do <var>x</var>, zapsaný jako <var>x</var>!,
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matematici definují takto:
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* 0! = 1
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* Pro kladná <var>x</var> je <var>x</var>! = <var>x</var>(<var>x</var> - 1)
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* Pro kladná <var>x</var> je <var>x</var>! = <var>x</var> · (<var>x</var> - 1)!
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Neboli v Pythonu:
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```python
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def factorial(x):
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if x == 0:
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return 1
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else:
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elif x > 0:
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return x * factorial(x - 1)
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print(factorial(5))

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