CountingNumbers

import java.util.ArrayList;
import java.util.Scanner;

public class CountingNumbers {
    public static void main(String[] args) {
        Scanner kb = new Scanner(System.in);
        echo("Input 30 numbers from 1-100\n");
        ArrayList<Integer> nums = new ArrayList<Integer>();
        int x = 0;
        while ((kb.hasNext()) && (x < 30)) {
            nums.add(kb.nextInt());
            x++;
        }
        echo("Inputted Numbers:");
        showArr(nums);
        echo("Sorted:\n");
        int a = 0, b = 0,c = 0,d = 0,e = 0,f = 0,g = 0,h = 0, i =0,j = 0;
        x = 0;
        while (x < nums.size()) {
            if (nums.get(x) < 11) {
                a++;
            }
            else if (nums.get(x) < 21) {
                b++;
            }
            else if (nums.get(x) < 31) {
                c++;
            }
            else if (nums.get(x) < 41) {
                d++;
            }
            else if (nums.get(x) < 51) {
                e++;
            }
            else if (nums.get(x) < 61) {
                f++;
            }
            else if (nums.get(x) < 71) {
                g++;
            }
            else if (nums.get(x) < 81) {
                h++;
            }
            else if (nums.get(x) < 91) {
                i++;
            }
            else if (nums.get(x) < 101) {
                j++;
            }
            x++;
        }
        echo("\n1-10\t");
        while (a > 5) {
            echo("*");
            a = a - 5;
        }
        echo("\n11-20\t");
        while (b > 5) {
            echo("*");
            b = b - 5;
        }
        echo("\n21-30\t");
        while (c > 5) {
            echo("*");
            c = c - 5;
        }
        echo("\n31-40\t");
        while (d > 5) {
            echo("*");
            d = d - 5;
        }
        echo("\n41-50\t");
        while (e > 5) {
            echo("*");
            e = e - 5;
        }
        echo("\n51-60\t");
        while (f > 5) {
            echo("*");
            f = f - 5;
        }
        echo("\n61-70\t");
        while (g > 5) {
            echo("*");
            g = g - 5;
        }
        echo("\n71-80\t");
        while (h > 5) {
            echo("*");
            h = h - 5;
        }
        echo("\n81-90\t");
        while (i > 5) {
            echo("*");
            i = i - 5;
        }
        echo("\n91-100\t");
        while (j > 5) {
            echo("*");
            j = j - 5;
        }
    }
    public static void echo(Object o) {
        System.out.print(o);
    }
    public static void showArr(ArrayList<Integer> arr) {
        int size = arr.size();
        int i = 0;
        while (i < size) {
            if (i == (size - 1)) {
                System.out.print(arr.get(i) + "]\n");
            }
            else if (i == 0) {
                System.out.print("[" + arr.get(i) + ", ");
            }
            else {
                System.out.print(arr.get(i) + ", ");
            }
            i++;
        }
    }
}