Menu

package activities;

import java.util.Scanner;

public class Menu {

    static Scanner sc = new Scanner(System.in);

    // Populate Array Elements
    public static  void populate(int[] arr) {
        System.out.println("POPULATE ARRAY ELEMENT:");
        System.out.println("Please enter t number: ");
        for(int i=0; i<5; i++) {
            arr[i] = sc.nextInt();
        }
    }

    public static  void printing(int[] arr, int size) {
        System.out.println("PRINTING ARRAY ELEMENT:");
        for (int i = 0; i < size; i++) {
            System.out.print(" " + arr[i]);
        }
    }

    public static void insert(int[] arr, int size) {
        System.out.println("INSERT NEW ITEM TO THE ARRAY ELEMENTS:");
        System.out.println("Please enter the item to be inserted:");
        int newItem = sc.nextInt();
        System.out.println("Please enter the location to be inserted:");
        int loc = sc.nextInt();

        for (int x = size-1; x >=(newItem-1); x--) {
             if(loc == x) {
                 arr[x+1] = arr[x];
             }
        }
        arr[newItem-1] = loc;
        for(int i=0; i<size; i++) {
            System.out.print(" " + arr[i]);
        }
    }

    public static void delete(int[] arr) {
        System.out.println("DELETE AN ITEM:");
        System.out.println("Please enter the item to be deleted:\n");
        int delItem = sc.nextInt();
         for(int i = 0; i < arr.length; i++){
            if(arr[i] == delItem){
                // shifting elements
                for(int j = i; j < arr.length - 1; j++){
                    arr[j] = arr[j+1];
                }
                break;
            }
        }
    }

    public static  void sequentialSearch(int[] arr, int size) {
        System.out.println("SEQUENTIAL SEARCH:");
        System.out.println("Please enter the item to be search:");
        int search = sc.nextInt();
        int count = 0;
         for (int x = 0; x < size; x++) {
            if (search == arr[x]) {
                System.out.println("Item " + search + " is found at location " + count);
                break;
            }
            count++;
         }
    }

    public static  void findMinimum(int[] arr, int size) {
        System.out.println("FIND MINIMUM:\n");
        int min = arr[0];
        for (int j = 1; j < size; j++) {
            if (arr[j] < min) {
                min = arr[j];
            }
        }
        System.out.println("Minimum value among the list is " + min);
    }

    public static  void findMaximum(int[] arr, int size) {
        System.out.println("FIND MAXIMUM:\n");
        int max = arr[0];
        for (int n = 1; n < size; n++) {
            if (arr[n] > max) {
                max = arr[n];
            }
        }
        System.out.println("Maximum value among the list is " + max);
    }

    public static void menu() {
        String[] menuList = { "\n1 - POPULATE ARRAY ELEMENTS\n", "2 - PRINTING ARRAY ELEMENTS\n",
                "3 - INSERT NEW ELEMENTS\n", "4 - DELETE AN ITEM\n", "5 - SEQUENTIAL SEARCH\n", "6 - FIND MINIMUM\n",
                "7 - FIND MAXIMUM\n", "0 - EXIT\n" };
        for (String menuItem : menuList) {
            System.out.print(menuItem);
        }
    }

    public static void main(String[] args) {
        int size = 10;
        int[] myArr = new int[size+1];
        int choice = 0;
        do{
            menu();
            choice = sc.nextInt();
            switch(choice) {
                case 1:
                    populate(myArr);
                    break;
                case 2:
                    printing(myArr, size);
                    break;
                case 3:
                    insert(myArr, size);
                    break;
                case 4:
                    delete(myArr);
                    break;
                case 5:
                    sequentialSearch(myArr, size);
                    break;
                case 6:
                    findMinimum(myArr, size);
                    break;
                case 7:
                    findMaximum(myArr, size);
                    break;
            }
        }while(choice != 0);
        System.out.println("Exited...");
    }
}// End of the Class