我有这个数组，我写了一个函数MostFreq，它接受一个整数数组并返回2个值：该数组中的数字越频繁及其频率越多，请检查此代码，我认为您怎么看？有更好的方法吗？

static void Main()
{ 
    int [] M={4,5,6,4,4,3,5,3};
    int x;
    int f=MyMath.MostFreq(M,out x );
    console.WriteLine("the most Frequent Item = {0} with frequency = {1}",x,f);
}

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在Mymath课上

public static int MostFreq(int[] _M, out int x)
{
    //First I need to sort the array in ascending order
    int Max_Freq, No_Freq, i, k;
    Array.Sort(_M);                         
    k = _M[0];
    Max_Freq = 0; i = 0; x = 0;
    while (i < _M.Length)
    {
        //No_Freq= the frequency of the current number
        No_Freq = 0;
        //X here is the number which is appear in the array Frequently 
        while (k == _M[i])
        {
            No_Freq++;
            i++;
            if (i == _M.Length) 
                break;
        }
        if (No_Freq > Max_Freq)
        {
            //so it will be printed the same
            Max_Freq = No_Freq;
            x = k;
        }
        if (i < _M.Length) k = _M[i];
    }
    return (Max_Freq);
}