Bai5_Exercise3

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package javacore_season5_exercise3;

import java.util.Scanner;

/**
 *
 * @author HuyLV
 */
public class Exercise3 {

    public static int n;
    public static int[] arr;

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        input();
        System.out.println("Original Array:");
        for (int value : arr) {
            System.out.print(value + "\t");
        }

        System.out.println();
        findMaxNumber(arr);

        System.out.println();
        System.out.println("Decreasing Array:");
        decreasing(arr);
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] < 0) {
                arr[i] = 0;
            }
            System.out.print(arr[i] + "\t");
        }
        System.out.println("-------------Input Number-------------");
        inputMember(arr);
    }

    private static void input() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Nhap n phan tu cua mang: ");
        n = scanner.nextInt();
        arr = new int[n];
        for (int i = 0; i < arr.length; i++) {
            System.out.print("Nhap phan tu o vi tri " + i + " : ");
            arr[i] = scanner.nextInt();
            while (arr[i] < 0 || arr[i] > 100) {
                System.out.printf("Hay nhap lai phan tu thu %d (0 < phantu < 100): ", i);
                arr[i] = scanner.nextInt();
            }
        }
    }

    public static void findMaxNumber(int[] arr) {
        int total = 0;
        int index = 0;
        for (int value : arr) {
            total += value;
        }
        int max = arr[0];
        int temp = total - arr[0];
        for (int i = 1; i < arr.length; i++) {
            int result = total - arr[i];
            if (result < temp) {
                temp = result;
                max = arr[i];
                index = i;
            }
        }
        System.out.printf("So lon nhat: %d\t tai vi tri: %d\n", max, index);
    }

    public static int[] decreasing(int[] arr) {
        int temp;
        for (int i = 0; i < arr.length; i++) {
            for (int j = i; j > 0; j--) {
                if (arr[j] > arr[j - 1]) {
                    temp = arr[j];
                    arr[j] = arr[j - 1];
                    arr[j - 1] = temp;
                }
            }
        }
        return arr;
    }

    public static void inputMember(int[] arr) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Hay nhap vao 1 so: ");
        int number = scanner.nextInt();
        int[] result = new int[arr.length + 1];
        for (int i = 0; i < result.length; i++) {
        // cach 1
            if(i < result.length - 1){
                result[i] = arr[i];
            } else{
                result[i] = number;
            }
        //

    /* Cach 2
        boolean isAdded = false;
        if (!isAdded) {
                if (i < arr.length) {
                    if (arr[i] > number) {
                        result[i] = arr[i];
                    } else {
                        result[i] = number;
                        isAdded = true;
                    }
                } else {
                    result[i] = number;
                }
            } else {
                result[i] = arr[i - 1];
            }
    */
        }
        decreasing(result);
        for (int i = 0; i < result.length; i++) {
            System.out.print(result[i] + "\t");
        }
    }
}