Where are the arrays stored during execution? Show the contents of the stack and heap duri...

Where are the arrays stored during execution? Show the contents of the stack and heap during and after executing displayArray, countLetters, displayCounts in Listing 1.

LISTING 1 CountLettersInArray.java

1 public class CountLettersInArray {
2 /** Main method */
3 public static void main(String[] args) {
4 // Declare and create an array
5 char[] chars = createArray();
6
7 // Display the array
8 System.out.println("The lowercase letters are:");
9 displayArray(chars);
10
11 // Count the occurrences of each letter
12 int[] counts = countLetters(chars);
13
14 // Display counts
15 System.out.println();
16 System.out.println("The occurrences of each letter are:");
17 displayCounts(counts);
18 }
19
20 /** Create an array of characters */
21 public static char[] createArray() {
22 // Declare an array of characters and create it
23 char[] chars = new char[100];
24
25 // Create lowercase letters randomly and assign
26 // them to the array
27 for (int i = 0; i
28 chars[i] = RandomCharacter.getRandomLowerCaseLetter();
29
30 // Return the array
31 return chars;
32 }
33
34 /** Display the array of characters */
35 public static void displayArray(char[] chars) {
36 // Display the characters in the array 20 on each line
37 for (int i = 0; i
38 if ((i + 1) % 20 == 0)
39 System.out.println(chars[i]);
40 else
41 System.out.print(chars[i] + " ");
42 }
43 }
44
45 /** Count the occurrences of each letter */
46 public static int[] countLetters(char[] chars) {
47 // Declare and create an array of 26 int
48 int[] counts = new int[26];
49
50 // For each lowercase letter in the array, count it
51 for (int i = 0; i
52 counts[chars[i] - 'a']++;
53
54 return counts;
55 }
56
57 /** Display counts */
58 public static void displayCounts(int[] counts) {
59 for (int i = 0; i
60 if ((i + 1) % 10 == 0)
61 System.out.println(counts[i] + " " + (char)(i + 'a'));
62 else
63 System.out.print(counts[i] + " " + (char)(i + 'a') + " ");
64 }
65 }
66 }