challenge302.intermediate.ASCIIHistogramMaker.java Source code

Introduction

Here is the source code for challenge302.intermediate.ASCIIHistogramMaker.java

Source

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package challenge302.intermediate;

import org.jjrobinson.util.fileio.ChallengeInput;

import java.util.ArrayList;
import java.util.Arrays;
import org.apache.commons.lang3.StringUtils;

/**
 *
 * @author Jason Robinson github.com/jjrobinson
 */
public class ASCIIHistogramMaker {

    public static void main(String[] args) {
        String inFile = "/data/challenge302intermediate.txt";

        //        ArrayList<int[]> graphData = new ArrayList<int[]>();
        ArrayList<String> input = new ChallengeInput().getInputByLines(ASCIIHistogramMaker.class, inFile);
        //take first line as the chart bounds and create new BarChart with those bounds
        IntBasedBarChart chart = new IntBasedBarChart(input.remove(0).split(" "));

        //take next line as the number of chart elements
        int size = Integer.parseInt(input.remove(0));

        for (int i = 0; i < size; i++) {
            //            System.out.println("Parsing: graph data line=\""+input.get(i)+"\"");
            chart.addData(stringArraytoIntArray(input.get(i).split(" ")));
        } //end adding all lines

        printChart(chart, size);

    }//end main

    private static void printChart(IntBasedBarChart c, int size) {
        ArrayList<int[]> data = c.getData();
        if (data.size() == size) {
            //what is the step between elements
            int step = ((c.getBounds().getMaxX() - c.getBounds().getMinX()) / size);

            //find the MAX # of chars for each entry in the chart
            //if chart starts at 0 and goes to 100, the step should be 3 chars
            int charStep = String.valueOf(c.getMaxX()).length();
            char chartChar = '*';
            int numColumns = ((size + 1) * (charStep + 1));
            //            System.out.println("MinY="+c.getMinY());
            //            System.out.println("MaxY="+c.getMaxY());
            //            System.out.println("MinX="+c.getMinX());
            //            System.out.println("MaxX="+c.getMaxX());
            //            System.out.println("number of X columns="+numColumns);

            //chreate a 2D char array to store the final barChart
            //the height is the difference between maxX-minX +1 (for x axis labels)
            //        char[][] graph = new char[c.getMaxX()-c.getMinX()+1]
            //                //and the width of the chart is the charStep
            //                [(charStep+1)*size];

            int yAxisCharMax = String.valueOf(c.getMaxY()).length();
            //print the x axis guide significant digit
            //            System.out.print(StringUtils.repeat(" ", yAxisCharMax));
            //            for(int i=1;i<numColumns;i++){
            //                if(i/10 >0)
            //                    System.out.print(i/10);
            //                else
            //                    System.out.print(" ");
            //            }
            //            System.out.println("|");

            //print the x axis guide
            //            System.out.print(StringUtils.repeat(" ", yAxisCharMax));
            //            for(int i=1;i<numColumns;i++){
            //                System.out.print(i%10);
            //            }
            //            System.out.println("|");
            //
            //print if this column is a printing column
            //            System.out.print(StringUtils.repeat(" ", yAxisCharMax));
            //            for(int i=1;i<numColumns;i++){
            //                if(i % (charStep+1) == 0 && i >0)
            //                    System.out.print("p");
            //                else
            //                    System.out.print(" ");
            //            }
            //            System.out.println("|");
            //

            for (int y = c.getMaxY(); y >= c.getMinY(); y--) {
                System.out.print(String.format("%0" + yAxisCharMax + "d", y));
                int maxX = 0;
                for (int x = 1; x < numColumns; x++) {

                    //need to find if the current column is a printing column
                    if (x % (charStep + 1) == 0 && x > 0) {

                        //calc the current column in the data, check the value
                        //if the data value is <= current y axis, print chartChar
                        if (y <= data.get(x / (charStep + 1) - 1)[2]) {
                            System.out.print(chartChar);
                        } else {//Y is > data value, so print space
                            System.out.print(" ");
                        }
                    } else {//not a printing column, print space
                        System.out.print(" ");
                    }
                    maxX = x;
                } //end looping through x Axis

                //print newline at the end of the X axis on this level of Y axis
                System.out.println();//end the printed line
            } //end of loop on data

            //    //print if this column is a printing column
            //            System.out.print(StringUtils.repeat(" ", yAxisCharMax));
            //            for(int i=1;i<numColumns;i++){
            //                if(i % (charStep+1) == 0 && i >0)
            //                    System.out.print("p");
            //                else
            //                    System.out.print(" ");
            //            }
            //            System.out.println("|");
            //
            //print the X axis
            System.out.print(StringUtils.repeat(" ", yAxisCharMax));
            for (int[] d : c.getData()) {
                System.out.print(String.format("%0" + String.valueOf(c.getMaxX()).length() + "d", d[0]) + " ");
            }
            System.out.println(String.valueOf(c.getMaxX()));

        } //the data we got returned is the expected size
        else {
            System.out.println("ERROR: data size \"" + data.size() + "\" is !=" + size);
        }
    }

    private static int[] stringArraytoIntArray(String[] s) {
        //        System.out.println("Size="+s.length);
        int[] asInts = new int[s.length];
        try {
            for (int i = 0; i < s.length; i++) {
                //            System.out.println("Parsing: "+s[i]);
                asInts[i] = Integer.parseInt(s[i]);
            }
        } catch (Exception e) {
            System.out.println("ERROR: NumberFormatException: " + e + "\n" + Arrays.toString(s));
        }
        return asInts;
    }
}