题解 | #比较版本号#

using System;
using System.Collections.Generic;


class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 比较版本号
     * @param version1 string字符串 
     * @param version2 string字符串 
     * @return int整型
     */
    public int compare (string version1, string version2) {
        String[] s1 = version1.Split(".");
        String[] s2 = version2.Split(".");
        int l1 = s1.Length, l2 = s2.Length;
        int i = 0, j = 0;
        while(i < l1 || j < l2){
            int num1 = 0, num2 = 0;
            if(i < l1) num1 = Int32.Parse(s1[i++]);
            if(j < l2) num2 = Int32.Parse(s2[j++]);
            if(num1 != num2) return num1 > num2 ? 1 : -1; 
        }
        return 0;
    }
}