After 3 Days of coding

My brain is boiling.

Yes. Thats true. This is possible. When You starting such difficult thing You have to prepare for very intensive thinking. All the time.  When I gets up I am thinking about my homework, problem, solving this problems, thinking about every aspect of things I had learned.

Some times I have doubts and sometimes I am frustrated. But as Louis Zamperini said: Never give up, no matter what!  And I am holding this words very hard. I will not stop to learn.

Because there is something what I like in coding.

Do You know what is it?

Satisfaction! That feeling when You compile code and code is working with out mistakes and exceptions.

I have to work on my code. Sometimes when I code I want to open opened door. And my code is not clean as want to be.

My biggest problem is that I know what I have to do, how algorithm or program have to work but when I sit down and want to code it I have wall a front of me. I think every beginning coder have same problems. My coach says that solution will come with time. I hope so, I believe it will come!

And what is most important! I want to do this I like it and I can’t wait for weekend for new lessons!

Scope of knowledge after 3 days is:

  • types
  • methods
  • conditions
  • loops
  • tables
  • basics object programming //only theory
  • setters and getters

My homework:

  1. Draw 6 numbers from the table with range 1-49 //maybe some day I win some $$ 😉
  2. You have table with number and You ask user to choose table index and number You want to add to table

As always You can use those code if You want.

Link to Github: github.com/abramovvicz

So first exercise is:

package domowe;

import java.util.Random;

public class Lotto {
    int table[] = new int[6];
    int table2[] = new int[6];

    public static void main(String[] args) {
        Lotto lotto = new Lotto();
        lotto.chooseNumbers();
        lotto.checkNumbers();
    }

    private void chooseNumbers() {
        Random random = new Random();

        for (int i = 0; i < table.length; i++) {
            table[i] = random.nextInt(49) + 1;
            table2[i] = table[i];
        }
    }
    
    private void checkNumbers() {
        System.out.println("    ");
        for (int i = 0; i < table.length; i++) {
            for (int j = 0; j < table2.length; j++) {
                if (i != j) {
                    if (table[i] == table2[j]) {
                        chooseNumbers();
                    }
                }
            }
            System.out.println("Prędzej wygram w totka niż zostanę programistą? Sprawdźmy to!: " + table[i]);
        }
    }
}

Second exercise:

package domowe;

import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;

public class ArrayTest {
    private int[] table1 = new int[6];

    public static void main(String[] args) {

        ArrayTest arrayTest = new ArrayTest();
        arrayTest.fillTable();
        arrayTest.write();
        Arrays.sort(arrayTest.table1);
        arrayTest.write();
        arrayTest.addNumberToIndex();
        arrayTest.write();
    }

    private void addNumberToIndex() {
        Scanner giveIndex = new Scanner(System.in);
        Scanner giveNumber = new Scanner(System.in);
        System.out.println("Enter index of the array: ");
        int tableIndex = giveIndex.nextInt();


        if (tableIndex < table1.length) {
            System.out.println("Table length is: " + table1.length + " \n you have exceeded the length of the table, give another index");
            return;
        } else {
            System.out.println("Enter number to add to table");
            int number = giveNumber.nextInt();
            int[] table2 = new int[table1.length + 1];
            for (int i = tableIndex; i < table2.length; i++) {
                if (tableIndex == 0 && i < table1.length) {
                    table2[i + 1] = table1[i];
                } else {
                    table2[i] = table1[i - 1];
                }
                for (int j = 0; j &lt; table1.length; j++) {
                    if (table2[j] == 0) {
                        table2[j] = table1[j];
                    }

                }
            }
            table2[tableIndex] = number;
            table1 = table2;
        }

    }

    private void fillTable() {
        int max = 1000;
        Random random = new Random();
        for (int i = 0; i < table1.length; i++) {
            table1[i] = random.nextInt(max);

        }
    }

    private void write() {
        System.out.println("tablica: " + Arrays.toString(table1));
    }

    private void addNumber(int a) {
        int[] tablica2 = Arrays.copyOf(table1, table1.length + 1);
        tablica2[tablica2.length - 1] = a;
        table1 = tablica2;
    }
}

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