lab1

import java.util.Scanner;

public class Smth {
    private int[] arr;
    private int n=5;
    private int sum=0, avg, min, rand;

    public static void main (String[] args) {
        Smth ayylmao = new Smth();
        ayylmao.showArr();
        System.out.println(ayylmao.arrSum());
        System.out.println(ayylmao.arrAvg());
        System.out.println(ayylmao.arrMin());
        ayylmao.arrSwitch();
    }

    //конструктор
    Smth(){
        n=getsize();
        arr=new int[n];
        for (int i=0; i<arr.length; i++)
        {
            arr[i]= (int) (Math.random() * 10);
        }
    }

    public void arrSwitch () {
        System.out.print("\nЭлемент массива # ");

        if (arrChet() == 1) {
            System.out.print(rand);
            System.out.print(" со значением ");
            System.out.print(arr[rand]);
            System.out.print(" - чётный");
        }
        else {
            System.out.print(rand);
            System.out.print(" со значением ");
            System.out.print(arr[rand]);
            System.out.print(" - нечётный");
        }
    }

    public int arrChet ()
    {
        rand=(int) (Math.random() * n);
        int temp=0;
        switch (arr[rand]) {
            case 0: temp= 1;
            case 1: temp= 2;
            case 2: temp= 1;
            case 3: temp= 2;
            case 4: temp= 1;
            case 5: temp= 2;
            case 6: temp= 1;
            case 7: temp= 2;
            case 8: temp= 1;
            case 9: temp= 2;
        }
        return temp;
    }

    public int getsize ()
    {
        System.out.println("\nEnter array size: ");
        Scanner myObj = new Scanner(System.in);
        String m = myObj.nextLine();
        return Integer.parseInt(m);
    }

    public void showArr()
    {
        System.out.println("\nYour array: ");
        int i=0;
        while (i<arr.length)
        {
            System.out.println(arr[i]);
            i++;
        }
    }

    public int arrSum()
    {
        System.out.println("\nSum result: ");
        int i=0;
        do {
            sum+=arr[i];
            i++;
        } while (i<arr.length);
        return sum;
    }

    public int arrAvg()
    {
        int counter=0;
        System.out.println("\nAverage: ");
        for (int i=0; i<arr.length; i++){
                avg+=arr[i];
                counter++;
        }
        return avg/counter;
    }

    public int arrMin()
    {
        System.out.println("\nMin: ");
        min=arr[0];

        for (int i:arr)
        {
            if (i<n) { if (min>arr[i]) min=arr[i];}
        }
        return min;
    }
}