Vertical histogram
So, 0, 10, 20, 30 are x-axis, and 0, 10000, 20000, 30000, 40000, 50000, 60000 are y-axis
import java.util.*;
import java.io.*;
/*
- CSC142 Programming Assignment #4:
*
- Print an ascii histogram of the values of the ‘distribution[]’ array (defined below)
- to standard output.
*
- You will use print and println methods to print this histogram to standard output, but
- it will appear ‘sideways’.
*
- The output should have a line to represent the x-axis, and labels on the x-axis
- in 5 or 10 count increments.
*
- Use the ‘*’ character to represent the magnitude of the values. You will want to look
- at the initialization statement below, find the maximum value in ‘distribution[]’ and
- scale your output to an optimal display size for the end user.
*
- I will post an example of a properly scaled output for this data set, and how the histogram
- should appear to the Resources block in WAMAP.
*
- You may modify the main() method below (which does not work properly),
- or write your own method(s) to complete the assignment.
*
- You can begin with this file, but please remember to remove my comments and replace
- them with your own. (including a header comment with name, date, assignment number,
- a description of what the class does, etc.)
*
- The array, ‘distribution[]’, has previously been computed from the Geiger counter data
- log file 7_14_2019.txt, which is posted in the Resources Block if you want to look at it.
*
- The number of counts per minute logged to this file ranges from 0-39 counts per minute,
- for the entire 15 months logged in the file.
- So ‘distribution[]’ is statically initialized below, with 40 elements, which cover the
- range from 0 to 39 counts per minute.
*
- The number of occurrences of each specific value of counts per minute in the log file is
- stored in distribution[], at that particular array index in distribution[].
*
- For example, during the 15 month period that is logged in the file, there were exactly
- 8 times that a value of 2 counts per minute occurred. This is seen below in the
- initialization statement for ‘distribution’: distribution[2] has the value 8.
*
*/
public class PrintDistribution {
// private static String infile = “7_14_2019.txt”; The original data file name,
// included here for documentation.
public static int[] distribution = {0,1,8,59,215,703,1848,3975,8077,13937,22195,31628,
41711,51099,57142,59959,59670,55756,48850,40931,32583,
24995,18217,12794,8623,5577,3601,2272,1259,764,464,246,
153,80,39,22,12,6,3,0};
public static final int MAX_COUNTS = distribution.length;
public static void main(String[] args){
for (int i = 0; i < MAX_COUNTS ; i++) {
if (i % 10 == 0) {
System.out.print(i);
System.out.println(“|”);
}
else {
if (i < 10) {
System.out.println(” |”);
}
else {
System.out.println(” |”);
}
}
}
}
}
Sample Solution
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