题解 | 比较版本号

/**
 * 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
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int compare(char* version1, char* version2 ) {
    // write code here
    char* strs1 = strtok(version1, ".");
    int num1[32] = {0};
    int num2[32] = {0};
    int lenth1 = 0;
    int lenth2 = 0;
    int lenth = 0;
    while(strs1 != NULL) {
        num1[lenth1++] = atoi(strs1);
        strs1 = strtok(NULL, ".");
    }
    char* strs2 = strtok(version2, ".");
    while(strs2 != NULL) {
        num2[lenth2++] = atoi(strs2);
        strs2 = strtok(NULL, ".");
    }
    lenth = lenth1 > lenth2 ? lenth1 : lenth2;
    for (int i = 0; i < lenth; i++) {
        if(num1[i] > num2[i]) {
            return 1;
        }
        if (num1[i] < num2[i]){
            return -1;
        }
    }
    return 0;
}