/// <summary>
/// Division outarray[i] / val
/// </summary>
public static void Div(Intarray outarray, int val)
{
for (int i = 0; i < outarray.Length1d(); i++)
{
outarray.Put1d(i, outarray.At1d(i) / val);
}
}
/// <summary>
/// Subtraction val - outarray[i]
/// </summary>
public static void Sub(int val, Intarray outarray)
{
for (int i = 0; i < outarray.Length1d(); i++)
{
outarray.Put1d(i, val - outarray.At1d(i));
}
}
/// <summary>
/// Add outarray[i] + val
/// </summary>
public static void Add(Intarray outarray, int val)
{
for (int i = 0; i < outarray.Length1d(); i++)
{
outarray.UnsafePut1d(i, outarray.UnsafeAt1d(i) + val);
}
}
public static void RPermutation(Intarray index, int n)
{
index.Resize(n);
for (int i = 0; i < n; i++)
{
index.UnsafePut1d(i, i);
}
Shuffle(index);
}
public static Intarray operator /(Intarray array, int val)
{
Intarray res = array;
for (int i = 0; i < array.Length1d(); i++)
{
res.UnsafePut1d(i, array.UnsafeAt1d(i) / val);
}
return(res);
}
public static Intarray operator *(Intarray array, int val)
{
Intarray res = array;
check_range(res.Length1d() - 1, array.Length1d());
for (int i = 0; i < array.Length1d(); i++)
{
res.UnsafePut1d(i, array.UnsafeAt1d(i) * val);
}
return(res);
}
public static void Shuffle <T>(Narray <T> values)
{
Floatarray temp = new Floatarray(values.Length());
Intarray index = new Intarray();
for (int i = 0; i < temp.Length(); i++)
{
temp.UnsafePut1d(i, DRandomizer.Default.drand());
}
Quicksort(index, temp);
Permute(values, index);
}
public static Intarray operator -(Intarray outarray1, Intarray array2)
{
if (!SameDims(outarray1, array2))
{
throw new Exception("outarray1 and array2 must be same dims!");
}
Intarray res = outarray1;
for (int i = 0; i < outarray1.Length1d(); i++)
{
res.UnsafePut1d(i, outarray1.UnsafeAt1d(i) - array2.UnsafeAt1d(i));
}
return(res);
}
public static int Max(Intarray a)
{
int value = a.At1d(0);
for (int i = 1; i < a.Length1d(); i++)
{
int nvalue = a.At1d(i);
if (nvalue <= value)
{
continue;
}
value = nvalue;
}
return(value);
}
public static int ArgMin(Intarray a)
{
if (!(/*a.Rank() == 1 && **/ a.Dim(0) > 0))
{
throw new Exception("CHECK_ARG: a.Rank()==1 && a.Dim(0)>0");
}
int value = a.At1d(0);
int index = 0;
for (int i = 1; i < a.Length1d(); i++)
{
int nvalue = a.At1d(i);
if (nvalue >= value)
{
continue;
}
value = nvalue;
index = i;
}
return(index);
}
