Zadania Adrian 2

package com.Talar;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Menu();
    }

    public static void Menu(){
        Scanner inp = new Scanner(System.in);
        Scanner inp2 = new Scanner(System.in);
        boolean x = false;

        while(x!=true){
            System.out.println("Menu:\n Wybierz opcje: ");
            System.out.println("1. Pole kwadratu");
            System.out.println("2. Pole trójkąta");
            System.out.println("3. Pole prostokąta");
            System.out.println("4. Sklep");
            System.out.print("Wybierz opcje: "); String wyb = inp.nextLine();

            switch (wyb.charAt(0)){
                case '1':
                    System.out.print("Podaj bok: "); int bok = inp2.nextInt();
                    int kwadrat = Kwadrat(bok);
                    System.out.println("Pole kwadratu: " + kwadrat);
                    break;
                case '2':
                    double wynik = Trojkat();
                    System.out.println("Pole trójkąta: " + wynik);
                    break;
                case '3':
                    System.out.print("Podaj a: "); int a = inp2.nextInt();
                    System.out.print("Podaj b: "); int b = inp2.nextInt();
                    Prostokat(a,b);
                    break;
                case '4':
                    Sklep();
                    break;
                case '9':
                    x = true;
                    break;
                default:
                    break;
            }
        }
    }

    public static int Kwadrat(int x){
        return x*x;
    }

    public static double Trojkat(){
        Scanner inp = new Scanner(System.in);
        System.out.print("Wprowadź a: "); double a = inp.nextInt();
        System.out.print("Wprowadź h: "); double h = inp.nextInt();

        return ((a*h)/2);
    }

    public static void Prostokat(int a, int b){
        int wynik;
        if(a==b){ wynik = Kwadrat(a); }
        else{ wynik = a*b; }
        System.out.println("Pole prostokąta: " + wynik);
    }

    public static void Sklep(){
        double[] ceny = new double[10];
        double max = Double.MIN_VALUE;
        double max2 = Double.MIN_VALUE;
        for(int i = 0; i < ceny.length; i++) {
            ceny[i] = (i*2)+5;
            System.out.print(ceny[i] + ", ");
        }

        System.out.println("Nowe ceny:");
        for(int i = 0; i<ceny.length; i++){
            ceny[i] = ceny[i]*1.10;
            System.out.print(ceny[i]+", ");
            if(ceny[i]>max2) {
                max2 = max;
                max = ceny[i];
            }
        }
        System.out.println("\nmax1: " + max);
        System.out.println("max2: " + max2);
        System.out.println("Srednia: " + (max+max2)/2);
    }
}