1 public class CountLetterInArray {
2 public static void main(String[] args) {
3 char[] chars = createArray();
4
5 System.out.println("The lowercase letters are: ");
6 displayArray(chars);
7
8 int[] counts = countLetters(chars);
9
10 System.out.println(" ");
11 System.out.println("The occurrences of each letter are: ");
12 displayCounts(counts);
13 }
14
15 public static char[] createArray() {
16 char[] chars = new char[100];
17 for(int i=0; i<chars.length; i++) {
18 chars[i] = RandomCharacter.getRandomLowerCaseLetter();
19 }
20 return chars;
21
22 }
23 public static void displayArray(char[] chars) {
24 for(int i=0; i<chars.length; i++) {
25 if((i+1)%20==0)
26 System.out.println(chars[i]);
27 else
28 System.out.print(chars[i]+" ");
29 }
30 }
31 public static int[] countLetters(char[] chars) {
32 int[] counts = new int[26];
33
34 for(int i=0; i<chars.length; i++) {
35 counts[chars[i]-'a']++;
36 }
37 return counts;
38 }
39 public static void displayCounts(int[] counts) {
40 for(int i=0; i<counts.length; i++) {
41 if((i+1)%10==0)
42 System.out.println(counts[i]+" "+(char)(i+'a'));
43 else
44 System.out.print(counts[i]+" "+(char)(i+'a')+" ");
45 }
46 }
47 }
