Answer to Question #267451 in Java | JSP | JSF for Dan

Question

Survival of the Biggest

by CodeChum Admin

Looping a number and taking away each digit of it is so much fun, but I wanted to try out a much more complex task: getting the largest digit among them all.

Think you can handle the job?

Instructions:

Input a non-zero positive integer.

Using the same concept as the previous problem, figure out how to separate the digits of a number and determine which of the digits is the largest one, using a while. Afterwards, print the largest digit.

Tip #1: Create another variable that will hold the largest digit. Initial its value to a negative integer, like -1, outside the loop.

Tip #2: Everytime you get the rightmost digit, check if it is greater than the current largest digit. If it is, set it as the new largest digit.

Input

A line containing an integer.

214

Output

A line containing an integer.

4

Answer 1

SOLUTION TO THE ABOVE QUESTION

SOLUTION CODE

package com.company;

import java.util.*;
class Main{
    public static void main(String arg[])
    {
        //propmt the user to enter a number
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a number: ");
        int number = sc.nextInt();
        //lets convert the number to a string
        String number_string = Integer.toString(number);

        int number_length = number_string.length();
        // Now lets loop through the string to get the largets digit
        int maximum = 0;
        for(int i = 0; i< number_length; i++)
        {
            if(Character.getNumericValue(number_string.charAt(i))>maximum)
            {
               maximum = Character.getNumericValue(number_string.charAt(i));
            }
        }
        //Now lets print the largest digit

        System.out.println("The largest digit in our number "+number+" is "+maximum);
    }
}

SAMPLE OUTPUT