Arrays

import java.util.Scanner;

public class Arrays {
    public static void main(String[] args) {
        //----------WARM UP-----------------
        //---------------Ex1----------------
        /*
        int arr[] = new int[10];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.nextInt();
        }
        for (int j = 0; j < arr.length; j+=1) {
            if(arr[j] % 2 == 0) {
                System.out.print(arr[j] + " ");
            }
        }
        */
        //---------------Ex2----------------
        /*
        char arr[] = new char[10];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 characters: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.next().charAt(0);
        }
        for (int j = 0; j < arr.length; j+=1) {
            if(arr[j] >= 'A' && arr[j] <= 'Z') {
                System.out.print(j + " ");
            }
        }
        */
        //---------------Ex3----------------
        /*
        int arr[] = new int[10];
        System.out.println("Please enter 10 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = i * 3;
        }
        for(int n : arr) {
            System.out.printf("%d ", n);
        }
        */

        //---------------Ex4----------------
        /*
        int arr[] = new int[11];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.nextInt();
        }
        for (int j = 0; j < arr.length; j+=2) {
            arr[j] += 1;
        }
        for(int n : arr) {
            System.out.printf("%d ", n);
        }
        */

        //---------------Ex5----------------
        /*
        int arr[] = new int[10];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.nextInt();
        }
        for (int j = 0; j < arr.length; j+=2) {
            arr[j] += 1;
        }
        for (int j = 0; j < arr.length; j+=3) {
            arr[j] -= 1;
        }
        for(int n : arr) {
            System.out.printf("%d ", n);
        }
        */
        //------------ Homework Assignments ----------
        //---------------Ex6----------------
        /*
        char arr[] = new char[10];
        char c;
        int acc = 0;
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 characters: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.next().charAt(0);
        }
        System.out.println("Please enter a character: ");
        c = sc.next().charAt(0);
        for (char ch : arr) {
            if(ch == c) {
                acc += 1;
            }
        }
        System.out.printf("Number of appearances is: %d", acc);
        */

        //---------------Ex7----------------
        /*
        int[] arr1 = new int[5], arr2 = new int[5];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 5 integers: ");
        for(int i = 0; i < arr1.length; i+=1) {
            arr1[i] = sc.next().charAt(0);
        }
        System.out.println("Please enter another 5 integers: ");
        for(int i = 0; i < arr2.length; i+=1) {
            arr2[i] = sc.next().charAt(0);
        }

        for(int i = 0; i < arr1.length; i += 1) {
            for(int j = 0; j < arr2.length; j += 1) {
                if(arr1[i] == arr2[j]) {
                    System.out.printf("Number are identical in indexes of arr1[%d] and arr2[%d].\n", i, j);
                }
            }
        }
        */

        //---------------Ex8----------------
        /*
        int[][] arr = new int[3][5];
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 10 integers (5 for each array): ");
        for(int i = 0; i < arr.length - 1; i+=1) {
            for(int j = 0; j < arr[i].length; j += 1) {
                arr[i][j] = sc.nextInt();
            }
        }

        for(int i = 0; i < arr[2].length; i += 1) {
            arr[2][i] = arr[1][i] + arr[0][i];
        }

        System.out.println("The sum of the values in the arrays are:");
        for(int n : arr[2]) {
            System.out.printf("%d ", n);
        }
        */

        //---------------Ex9----------------
        /*
        char[] arr = new char[5];
        char c;
        boolean b = true;
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 5 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.next().charAt(0);
        }
        c = arr[0];
        for(int i = 1; i < arr.length; i += 1) {
            if(arr[i] != c) {
                b = false;
                break;
            }
        }
        if(b) {
            System.out.println("All values are the same");
        } else {
            System.out.println("Not all values are the same");
        }
        */

        //---------------Ex10----------------
        //
        int[] arr = new int[5];
        int n;
        boolean b = true;
        Scanner sc = new Scanner(System.in);
        System.out.println("Please enter 5 integers: ");
        for(int i = 0; i < arr.length; i+=1) {
            arr[i] = sc.next().charAt(0);
        }
        for(int i = 0; i < arr.length - 1; i += 1) {
            if(arr[i] >= arr[i + 1]) {
                b = false;
                break;
            }
        }
        if(b) {
            System.out.println("Values in the array are in ascending order");
        } else {
            System.out.println("Values in the array are not in order");
        }
        //
    }
}