31 lines
694 B
C#
31 lines
694 B
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Helper
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{
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public static class DivFnkt
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{
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public static int modulo10(string nummer)
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{
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// 'nummer' darf nur Ziffern zwischen 0 und 9 enthalten!
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int[] tabelle = { 0, 9, 4, 6, 8, 2, 7, 1, 3, 5 };
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int uebertrag = 0;
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foreach (char ziffer in nummer)
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uebertrag = tabelle[(uebertrag + ziffer - '0') % 10];
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return (10 - uebertrag) % 10;
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}
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public static bool IsNumeric(string value)
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{
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return value.All(char.IsNumber);
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}
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}
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}
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