package com.company;
import java.util.Arrays;
import static jdk.nashorn.internal.objects.NativeString.charAt;

public class Main {
    public static void main(String[] args) {
        Main lab1 = new Main();
        lab1.compulsory();
        lab1.optional(args);
    }

    static int computedN() {
        int n = (int) (Math.random() * 1_000_000);
        n = n * 3;
        n = n + 0b10101;
        n = n + 0xff;
        n = n * 6;
        return n;
    }

    static int recSum(int n) {
        int sum = 0;
        do {
            sum = 0;
            while (n != 0) {
                sum = sum + n % 10;
                n = n / 10;
            }
            System.out.println(sum);
            System.out.println('\n');
            n = sum;
        } while (n > 10);
        return n;
    }

    void compulsory() {
        System.out.println("Hello World!");
        String[] languages = {"C", "C++", "C#", "Python", "Go", "Rust", "JavaScript", "PHP", "Swift", "Java"};
        int result = computedN();
        result = recSum(result);
        System.out.println("Willy-nilly, this semester I will learn " + languages[result] + '.');
    }

    public String[] generate(int n, int k, char[] alphabet) {
        String[] words = new String[n];
        for (int i = 0; i < n; i++) {
            StringBuilder sb = new StringBuilder();
            for (int j = 0; j < k; j++) {
                int pos = (int) (Math.random() * (alphabet.length + 1)) - 1;
                if (pos < 0) pos=0;
                sb.append(alphabet[pos]);
            }
            words[i] = sb.toString();
        }
        return words;
    }

    void optional(String[] args) {

        if (args.length < 6) {
            System.out.println("Not enough arguments!");
            System.exit(-1);
        } else {
            //alte validari este int sau char

            int wordLg = Integer.parseInt(args[1]);
            int nbWords = Integer.parseInt(args[0]); //how many words to generate
            final int alphabetSize = args.length - 2; //how many characters has the alphabet
            char[] myAlphabet = new char[alphabetSize]; //create the alphabet array

            int l,c;
            int i;
            for (i = 0; i < alphabetSize; i++) //
                myAlphabet[i] = args[i + 2].charAt(0);//converteste in char stringul gasit la poz curenta
            System.out.println("That is your alphabet : ");
            System.out.println(myAlphabet);
            String[] words = generate(nbWords, wordLg, myAlphabet);
            System.out.println("These are your random generated words : ");
            for( i=0;i< nbWords;i++){
                System.out.println(words[i]);
            }

            int[][] isAd = new int[nbWords][nbWords];
            for (l = 1; l <= nbWords; l++)
                for (c = 1; c <= nbWords; c++)
                    isAd[l][c] = check(words, l,c, wordLg);

            for (int[] row : isAd)
                System.out.println(Arrays.toString(row));
        }
    }
    public int check(String[] words,int i,int j,int n)
    {
        for (int p1=0;p1<=n;p1++)
            for(int p2=0;p2<n;p2++)
                if( (int)words[i].charAt(p1)==(int)words[j].charAt(p2)) return 1;
        return 0;
    }
    void bonus() {
//Do stuff
    }
}