44 lines
1.1 KiB
C#
44 lines
1.1 KiB
C#
using System;
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namespace SoFii {
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public static class RNG {
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private static object Lock { get; } = new object();
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private static Random NormalRandom { get; } = new Random();
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public static int Next() {
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lock(Lock)
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return NormalRandom.Next();
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}
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public static int Next(int max) {
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lock(Lock)
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return NormalRandom.Next(max);
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}
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public static int Next(int min, int max) {
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lock(Lock)
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return NormalRandom.Next(min, max);
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}
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public static void NextBytes(byte[] buffer) {
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lock(Lock)
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NormalRandom.NextBytes(buffer);
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}
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public static void Shuffle<T>(T[] arr) {
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if(arr is null)
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throw new ArgumentNullException(nameof(arr));
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lock(Lock) {
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int n = arr.Length;
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while(n > 1) {
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int k = Next(n--);
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T tmp = arr[n];
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arr[n] = arr[k];
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arr[k] = tmp;
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}
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}
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}
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}
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}
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