/** Assignment 1 Question 3
 *  COMP 1006/1406 - Fall 2021
 * 
 *  Creating a simple console view for some data
 */
public class A1Q3{
    // used to add extra information to plot output of horizontal plot
    public static boolean debug = false;

    public static double ave(double[] data, int index, int width){
        // Helper function that computes the average of 
        // 'width' consecutive values in 'data' starting at index 'i'
        // That is, it returns 
        //   (data[i] + data[i+1] + ... + data[i+width-1])/width
        // Use as you see fit. 

        // Try to catch some bad input cases and crash your 
        // program if input was bad. 
        // You are NOT required to do this in your methods yet!
        String bad = "Bad input to ave(): ";
        if( data == null ){
            throw new RuntimeException(bad + "data must not be null");    
        }else if(index < 0 || index >= data.length){
            throw new RuntimeException(bad + "index i out of range");    
        }else if(width == 0 || width >= data.length){
            throw new RuntimeException(bad + "width is invalid");
        }

        
        // first compute the sum of the width numbers
        double sum = 0.0;
        for(int j=index; j<index+width; j+=1){
            sum += data[j];
        }

        // pre-multiply by 1.0 to ensure we don't have integer division by mistake
        return (1.0*sum)/width;
    }


    public static int[] averageAndScale(Double[] data){
        // purpose: creates 20 bins for a bar plot by averaging values together
        //          and then scales the averages so that the max is 20.
        // input: array of floating point numbers
        // output: an array of size 20
        //         all elements are integers between 0 and 20 (inclusive)
        //         all values are scalled averages from the input data

        int[] out = new int[20];  // this will be the output array

        // add your code here to fill in the 'out' array
        
        return out;
    }
     public static String plotHorizontal(int[] data){
        // this method is provided as example working Java code

        // The StringBuilder class provides a mutable sequence of charcaters.
        // You should use this instead of the String class when you want to 
        // build up a string (for example, repeatedly using += on an existing 
        // String). Use a StringBuilder for more efficient appending/insterting 
        // of characters or strings when building up the sequence and then 
        // convert it to a String when done.
        StringBuilder plot = new StringBuilder();

        String hash    = "#";
        String space   = " ";
        String top     = "--+--------------------+\n";
        String newline = "\n";
        String pipe    = "|";
        
        plot.append(top);
        for(int i=0; i<data.length; i+=1){
            plot.append( String.format("%02d", i+1) + pipe);
            for(int j=0; j<data[i]; j+=1){plot.append(hash);}
            for(int j=data[i]; j<20; j+=1){plot.append(space);}
            plot.append(pipe + (debug?data[i]:"") + newline);
        }
        plot.append(top);

        return plot.toString();
    }

    public static String plotVertical(int[] data){
        // used to build up answer
        StringBuilder plot = new StringBuilder();  
        
        // add your code to build up your output string
        // remove the following line!
        plot.append("nothing to see here!");


        // convert the built up solution into a string and return
        return plot.toString();
    }



    // You are NOT asked to write a program so this following main 
    // method is not needed. However, you CAN write code here to help
    // test your methods. Just be sure that whatever you add here does not
    // 
    public static void main(String[] args){


    }
}