#165. 比较版本号

var compareVersion = function (version1, version2) {
  const firstParts = version1.split(".");
  const secondParts = version2.split(".");
  const length = Math.max(firstParts.length, secondParts.length);

  for (let i = 0; i < length; i++) {
    const firstRevision = Number(firstParts[i] ?? 0);
    const secondRevision = Number(secondParts[i] ?? 0);

    if (firstRevision > secondRevision) return 1;
    if (firstRevision < secondRevision) return -1;
  }

  return 0;
};