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 <string.h>
void stringToArray(char* str, int* arr,int *count) {
    char* token = strtok(str, ".");
    while (token != NULL) {
        arr[*count] = atoi(token);
        token = strtok(NULL, ".");
        (*count)++;
    }
}
int compare(char* version1, char* version2 ) {
    // write code here
    int count = 0,count1= 0,count2 = 0;;

    int* arr1 = (int*)calloc(sizeof(int), 100);  
    stringToArray(version1, arr1, &count1);

    int* arr2 = (int*)calloc(sizeof(int), 100);  
    stringToArray(version2, arr2, &count2);

    count = count1 > count2 ? count1 : count2;

    for (int i = 0; i < count; i++) {
        if (arr1[i] > arr2[i]) {
            return 1;
        }
        else if (arr1[i] < arr2[i]) {
            return -1;
        }
    }

    free(arr1);
    free(arr2);

    return 0;
}