Question

How to check if a number has zero in the center in Java

Answer 1

public class NumberHasZeroInCenter_Java {
    public static boolean hasZeroInCenter(int number) {
        // Convert the number to a string
        String numStr = Integer.toString(number);
        
        if (numStr.length() % 2 == 0) {
            return false; // Even length = no center digit
        }
        
        int centerIndex = numStr.length() / 2;
        
        return numStr.charAt(centerIndex) == '0';
    }

    public static void main(String[] args) {
        int number = 3720961;

        if (hasZeroInCenter(number)) {
            System.out.println("yes");
        } else {
            System.out.println("no");
        }
    }
}


/*
run:

yes

*/

 

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