18 lines
362 B
C#
18 lines
362 B
C#
using System;
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class Program
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{
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static int Factorial(int number)
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{
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if(number < 0)
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throw new ArgumentOutOfRangeException(nameof(number), number, "Must be zero or a positive number.");
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return number == 0 ? 1 : number * Factorial(number - 1);
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}
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static void Main()
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{
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Console.WriteLine(Factorial(10));
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}
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}
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