JAVA from book ''Introduction to Java Programming, Tenth Edition Y. Daniel Liang" | Sololearn: Learn to code for FREE!
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JAVA from book ''Introduction to Java Programming, Tenth Edition Y. Daniel Liang"

what is the problem in line 7 and 29 of this code ???? package countlettersinarray; public class CountLettersInArray { /** Main method */ public static void main(String[] args) { // Declare and create an array char[] chars = createArray(); // Display the array System.out.println("The lowercase letters are:"); displayArray(chars); // Count the occurrences of each letter int[] counts = countLetters(chars); // Display counts System.out.println(); System.out.println("The occurrences of each letter are:"); displayCounts(counts); } /** Create an array of characters */ public static char[] createArray() { // Declare an array of characters and create it char[] chars = new char[100]; // Create lowercase letters randomly and assign // them to the array for (int i = 0; i < chars.length; i++) chars[i] = RandomCharacter.getRandomLowerCaseLetter(); // Return the array return chars; } /** Display the array of characters */ public static void displayArray(char[] chars) { // Display the characters in the array 20 on each line for (int i = 0; i < chars.length; i++) { if ((i + 1) % 20 == 0) System.out.println(chars[i]); else System.out.print(chars[i] + " "); } } /** Count the occurrences of each letter */ public static int[] countLetters(char[] chars) { // Declare and create an array of 26 int int[] counts = new int[26]; // For each lowercase letter in the array, count it for (int i = 0; i < chars.length; i++) counts[chars[i] - 'a']++; return counts; } /** Display counts */ public static void displayCounts(int[] counts) { for (int i = 0; i < counts.length; i++) { if ((i + 1) % 10 == 0) System.out.println(counts[i] + " " + (char)(i + 'a')); else System.out.print(counts[i] + " " + (char)(i + 'a') + " "); } } }

9th Apr 2017, 11:44 PM
Arsalan Bardsiri
Arsalan Bardsiri - avatar
1 Answer
+ 4
do you mind putting it inside the code playground and then posting it here please
9th Apr 2017, 11:46 PM
Edward