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Question about the task

Maximum of entered numbers

Java Syntax, Level 4, Lesson 5

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I can't solve this problem....)

The program must read integers from the keyboard until something else is entered, such as a string or a character. Display the maximum even number entered. If several numbers are entered, you must display any of them.

Example input:

Example output:
8

Requirements:

The program should read numbers from the keyboard.
The program should display a number on the screen.
The program should display the maximum even number of the integers entered.
If several maximum even numbers are entered, then you need to display any one of them.
If there is no even number among the entered characters, or only one non-numeric character is entered, then display the minimum possible value for an int.
You need to read data from the keyboard in a while loop.

package en.codegym.task.pro.task04.task0408; import java.util.Scanner; /* Maximum of entered numbers */ public class Solution { public static void main(String[] args) { //write your code here Scanner console = new Scanner(System.in); int x = console.nextInt(); int max = 0; while(console.hasNextInt()){ if(x > max)max = x; if((x % 2) == 0) System.out.println(max); } } }

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Thomas

Level 41 , Bayreuth, Germany

26 February, 08:06

To read the first input outside the loop and use its value as maximum doesn't work here that good. Just imagine that first input to be a very high uneaven number and all following numbers are smaller even ones? That would give a wrong result. Means you need another approach. From reading the task conditions I'd asssume that there is at least one even number in the inputs. If that's true (and Codegym does not test with -2147483648) initializing max with Integer.MIN_VALUE should do the trick. If there may not be an even number amongst the inputs you could use a boolean helper variable (hasMax) and if it is set to false you initialize max with the even number you found and set it to true. If it is true, you do max checking. When printing the result you can check the boolean if there is a need to. Another hint: You're supposed to only consider even numbers. So you should do this check first in the row.