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RandomExtension.cs
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RandomExtension.cs
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//By SheepYhangCN
using System;
using System.Collections.Generic;
namespace SheepYhangCN.RandomExtension
{
public static class RandomX
{
public static T Choose<T>(this Random random,params T[] values)
{
return values[random.Next(values.Length)];
}
public static bool FiftyFifty(this Random random)
{
return (random.Next(0,2) == 0);
}
public static T FiftyFifty<T>(this Random random,T arg1,T arg2)
{
return (random.Next(0,2) == 0 ? arg1 : arg2);
}
public static bool Chance(this Random random,double chance)
{
return chance >= random.NextDouble();
}
public static T Chance<T>(this Random random,double chance,T result,params T[] others)
{
return Chance(random,chance) ? result : Choose(random,others);
}
public static T ChancePerItem<T>(this Random random,Dictionary<T,int> items)
{
var i = 0;
foreach (var ii in items)
{
i += ii.Value;
}
var r = random.Next(1, i + 1);
var current = 0;
var result = default(T);
foreach (var a in items)
{
current += a.Value;
if (current >= r)
{
result = a.Key;
break;
}
}
return result;
}
}
}