ternary operator help

Question about the task

Under discussion

I solved the puzzle but I had a piece of code that wasn't working. I ended up using an if-else statement butI wanted to use a ternary operator. But it wasn't working saying that (number % 2 == 0) is not a statement.

for (int i = 0; i < intArray.size(); i++)
       {
           int number = intArray.get(i);

           if (number % 2 == 0)
           {
               evenCount++;
           }
           else
           {
               oddCount++;
           }
           // (number % 2 == 0) ? evenCount++ : oddCount++;  // doesn't work for some reason;
       }

is there something I'm missing? Thanks in advance.

Use the keyboard to enter a positive number. Determine the number of even digits and odd digits in the entered number.
If a number is divisible by 2 without a remainder (i.e. the remainder is zero), then it is even.
And we'll increase the even digit counter (static variable even) by 1.
Otherwise, the number is odd, so we'll increase the odd digit counter (static variable odd).
Display the following message: "Even: a Odd: b", where a is the number of even digits and b is the number of odd digits.

Example for 4445:
Even: 3 Odd: 1

Requirements:

The program must read data from the keyboard.
The main method should calculate how many even digits are in the entered number and then write this number to the variable even.
The main method should calculate how many odd digits are in the entered number and then write this number to the variable odd.
The program should display text on the screen.
The displayed text must match the task conditions.

package com.codegym.task.task06.task0606; import java.io.*; import java.util.ArrayList; import java.util.Arrays; /* Even and odd digits */ public class Solution { public static int even; public static int odd; public static void main(String[] args) throws IOException { //write your code here //initialize reader BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); // read string from reader String string = reader.readLine(); // split the string and store in String array String[] stringArray = string.split(""); // initialize in int array ArrayList<Integer> intArray = new ArrayList<Integer>(); // int[] intArray = new int[stringArray.length]; // change all characters to int and store in int array for (int i = 0; i < stringArray.length; i++) { int integer = Integer.parseInt(stringArray[i]); intArray.add(integer); } // initialize odd digits and even digits int oddCount = 0; int evenCount = 0; // loop through intArray and compare to evenOddConditional for (int i = 0; i < intArray.size(); i++) { int number = intArray.get(i); if (number % 2 == 0) { evenCount++; } else { oddCount++; } // (number % 2 == 0) ? evenCount++ : oddCount++; } //print out results System.out.println("Even: " + evenCount + " Odd: " + oddCount); } }

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Gellert Varga

Level 23 , Szekesfehervar, Hungary

13 February 2021, 21:48

Ternary: this is an operator for purpose to give some value to a variable. In this case You can use it for example in this form:

int xyz = (number % 2 == 0) ? evenCount++ : oddCount++;

and then you discard that xyz :)