Explanation needed

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In der Diskussion

As I was able to solve the case with the help section but I am still figuring out why I would use "z%10" and then divide it by 10 in the if/else loop.

while (z > 0){
           x = z%10;
           if (x%2 == 0){
               gerade++;
               z = z/10;
           }
           else if (x%2 != 0){
               ungerade++;
               z = z/10;
           }
       }

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Thomas

Level 41 , Bayreuth, Germany

25 Juni 2020, 11:08

Given is the number 432 432 % 10 = 2 // the last digit. 432 / 10 = 43 // last digit cut off 43 % 10 = 3 // last digit 43 / 10 = 4 // last digit cut off .... As a result you're able to process each digit of the given number.

int number = 432, lastDigit, even = 0, odd = 0;
while (number > 0) {
    lastDigit = number % 10;

    if (lastDigit % 2 == 0) even++;
    else odd++;

    number = number / 10;
}
System.out.printf("even: %d, odd: %d", even, odd);