Skillbox_5_7

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Skillbox_5_7 : MonoBehaviour {

    private void Start() {
        SummOfEvenIntegersInRange();
        SummOfEvenIntegersInArray();
        IndexOfNumberInArray();
        ArraySelectionSort();
    }

    private void SummOfEvenIntegersInRange() {
        int min = 7, max = 21, summ = 0;
        for (int i = min; i <= max; i++)
            if (i % 2 == 0)
                summ += i;
        Debug.Log("Summ of even integers in range: " + summ.ToString());
    }

    private void SummOfEvenIntegersInArray() {
        int[] array = new int[] { 81, 22, 13, 54, 10, 34, 15, 26, 71, 68 };
        int summ = 0;
        for (int i = 0; i < array.Length; i++)
            if (array[i] % 2 == 0)
                summ += array[i];
        Debug.Log("Summ of even integers in array: " + summ.ToString());
    }

    private void IndexOfNumberInArray() {
        int[] array = new int[] { 81, 22, 13, 34, 10, 34, 15, 26, 71, 68 };
        int numberToFind = 34;
        int index = IndexOf(numberToFind, array);
        Debug.Log("Index of number in array: " + index.ToString());
    }

    private int IndexOf(int number, int[] array) {
        if (array == null || array.Length == 0)
            return -1;
        for (int i = 0; i < array.Length; i++)
            if (array[i] == number)
                return i;
        return -1;
    }

    private void ArraySelectionSort() {
        int[] array = new int[] { 6, 8, 3, 5, 9, 10, 7, 2, 4, 1 };
        Sort(array);
        Debug.Log("Sorted array: " + IntArrayToString(array));
    }

    private void Sort(int[] array) {
        for (int i = 0; i < array.Length - 1; i++) {
            int smallest = i;
            for (int j = i + 1; j < array.Length; j++)
                if (array[j] < array[smallest])
                    smallest = j;
            (array[i], array[smallest]) = (array[smallest], array[i]);
        }
    }

    private string IntArrayToString(int[] array) {
        string result = "[ ";
        for (int i = 0; i < array.Length; i++) {
            result += array[i].ToString();
            if (i < array.Length - 1)
                result += ", ";
        }
        return result + " ]";
    }
}