data class to process an array

Question

I am asked to write a class that take an array of double numbers then sort values and smooth them by the average .this is my attempt but I am not sure about sort and smooth methods.
public class Data {

private double [] values;
int largestPos;

//a constructor with 2 arguments
public Data(double [] array, int actSize)
{
values = array;

}
// method to find the position of largest value
public int largest(int strtIndex)
{
double largestPosition = values[strtIndex];
int largestPos = strtIndex;
for (int i = strtIndex ; i < values.length ; i++)
if (values[i] > largestPosition)
{
largestPosition = values[i];
}
return largestPos;
}
// method to sort the array value from largest to smallest
public void sort()
{

for (int i = 0 ; i < values.length;i++)
{
double temp = values[0];
values[0]= values[largestPos] ;
values[largestPos] = temp;
}

}

// method that modify values of the array
public void smooth()
{
double smoothed;
for (int i = 0; i<values.length ; i++)
{
if (i == 0){
smoothed = (values[0]+values[1])/2;
values[0] = smoothed;
}
if (i == values.length-1)
{ smoothed = (values[values.length-1]+values[values.length])/2;
values[i] = smoothed;
}
else
{
smoothed = (values[i-1]+values[i]+values[i+1])/3;
values[i]= smoothed;
}

}

}

//method to print the array values
public void print()
{
for (int i = 0 ;i< values.length ;i++)
System.out.println(values[i]);
}

}

Answer 1

Can you please provide a sample input and output so that I can understand better and may help you out!!