Alphabetiser.java

import java.util.Scanner;

public class Alphabetiser {

    /**
      * Alphabetiser.java by Chris Clarke, 11.04.2020
      * Find out whether or not two strings are anagrams of each other.
      */

    private static final String letters = "abcdefghijklmnopqrstuvwxyz";

    public int[] alphabetise (String s) {
        s = s.toLowerCase().strip();
        int[] alphabet = new int[26];
        // count occurences of each letter of the alphabet
        for (int i=0; i<alphabet.length; i++) {
            alphabet[i] = 0;
            for (int j=0; j<s.length(); j++) {
                if (s.charAt(j) == letters.charAt(i)) {
                    alphabet[i]++;
                }
            }
        }
        return alphabet;
    }// alphabetise()

    public boolean areEqual(String str1, String str2) {
        int[] myAlpha1 = alphabetise (str1);
        int[] myAlpha2 = alphabetise (str2);
        for (int i=0; i<myAlpha1.length; i++) {
            //System.out.println (letters.charAt(i) + ": " + myAlpha1[i]);
            if (myAlpha1[i] != myAlpha2[i]) {
                return false;
            }
        }
        return true;
    }// areEqual()

    public static void main (String[] args) {
        Alphabetiser alph = new Alphabetiser();
        Scanner in = new Scanner (System.in);
        String str1, str2;
        System.out.print ("Enter first string: ");
        str1 = in.nextLine();
        System.out.print ("Enter second string: ");
        str2 = in.nextLine();
        if (alph.areEqual (str1, str2)) {
            System.out.println ("They are anagrams.");
        } else {
            System.out.println ("They're NOT anagrams.");
        }
    }// main()
}// class Alphabetiser