Question

How to find the highest digit in integer without using array in C#

Answer 1

using System;

class Program
{
    static int getTheHighestDigit(int n) {
        int max = 0;
        while(n != 0) {
            int x = n % 10;
            if (x > max) {
                max = x;
            }
            n /= 10;
        }
        return max;
    }
    static void Main() {
        int n = 8647293;
        
        Console.WriteLine(getTheHighestDigit(n)); 
       
        n = 213;
        Console.WriteLine(getTheHighestDigit(n));

        n = 76400;
        Console.WriteLine(getTheHighestDigit(n));
     
        n = 111;
        Console.WriteLine(getTheHighestDigit(n));
    }
}



/*
run:

9
3
7
1

*/

 

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