SortAndDraw.java

Below is the syntax highlighted version of SortAndDraw.java.

/*
  Christopher Moretti
  cmoretti
  P01A/P06

  SortAndDraw takes in integers on StdIn, prints them out in sorted
  order on StdOut, and plots a histogram of them on StdDraw.
*/
  
public class SortAndDraw {
 
    public static void main(String[] args) {
     
        // the allowable range of integers
        int NUM_BINS = 100;

        // offset to center of square: half side-length.
        double OFFSET = .5;

        // array to hold counts for each possible int 0-99
        int [] arr = new int[NUM_BINS];

        // maximum count.
        int max = 0;

        // calculate count of each integer
        // and maximum count
        while(!StdIn.isEmpty()) {
            int i = StdIn.readInt();
            arr[i]++;
            if(arr[i] > max) 
                max = arr[i];
        }

        
        // Task 1: print an integer for
        // each integer from the input sequence
        for(int j = 0; j < NUM_BINS; j++) {
            for(int k = 0; k < arr[j]; k++) {
                StdOut.print(j + " ");
            }
        }
        StdOut.println();
        
        /* NB: The body of the loop below
         *  (line 64) could have been included 
         *  in the body of the loop above, with 
         *  the setup (lines 55-58) above the 
         *  loop. However most students will 
         *  have structured it using 2 loops 
         *  because of the separate tasks in 
         *  the specifications.
         */
        
        // set up drawing window
        StdDraw.setXscale(0, NUM_BINS);
        StdDraw.line(0, 0, NUM_BINS, 0);
        StdDraw.setYscale(0, max + 1);

        // Task 2: draw a box for
        // each integer from the input sequence
        for(int j = 0; j < NUM_BINS; j++) {
            for(int k = 0; k < arr[j]; k++) {
                StdDraw.square(j + OFFSET, k + OFFSET, OFFSET);
            }
        }
    }
}