100DaysofCode/Day34.java at main · justlikebing/100DaysofCode · GitHub

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public class Day34 {

    public static int compareVersion(String version1, String version2) {
        String[] v1 = version1.split("\\.");
        String[] v2 = version2.split("\\.");

        int maxLength = Math.max(v1.length, v2.length);

        for (int i = 0; i < maxLength; i++) {
            int num1 = i < v1.length ? Integer.parseInt(v1[i]) : 0;
            int num2 = i < v2.length ? Integer.parseInt(v2[i]) : 0;

            if (num1 < num2) {
                return -1;
            } else if (num1 > num2) {
                return 1;
            }
        }

        return 0;
    }

    public static void main(String[] args) {
        String version1 = "1.01";
        String version2 = "1.001";
        System.out.println(compareVersion(version1, version2)); // Output: 0

        version1 = "1.0";
        version2 = "1.0.0";
        System.out.println(compareVersion(version1, version2)); // Output: 0

        version1 = "0.1";
        version2 = "1.1";
        System.out.println(compareVersion(version1, version2)); // Output: -1
    }
}