compute sharpe ratio in csharp

main.cs
public static double CalculateSharpeRatio(double[] dailyReturns, double riskFreeRate)
{
    double averageReturn = dailyReturns.Average();
    double standardDeviation = Math.Sqrt(dailyReturns.Select(x => Math.Pow(x - averageReturn, 2)).Sum() / (dailyReturns.Length - 1));
    return (averageReturn - riskFreeRate) / standardDeviation;
}
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main.cs
double[] dailyReturns = { 0.01, 0.02, -0.03, 0.04, -0.01 };
double riskFreeRate = 0.005;
double sharpeRatio = CalculateSharpeRatio(dailyReturns, riskFreeRate);

Console.WriteLine($"Sharpe Ratio: {sharpeRatio:N2}");
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main.cs
Sharpe Ratio: 0.70
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