每日一题！如约而至！（图片整理，寻找数组的中心下标）

#include <stdio.h>
#include <string.h>

int main() {
    char str[1001] = {'\0'};
    while (scanf("%s", str) != EOF) {//输入的是字符串
        int len = strlen(str);
        for(int i = 0;i<len-1;i++)
        {
            for(int j = 0;j<len - 1 -i;j++)
            {
                if(str[j]-str[j+1]>0)
                {
                    char tmp = str[j];
                    str[j] = str[j+1];
                    str[j+1] = tmp;
                }
            }
        }
        printf("%s\n",str);
    }
    return 0;
}

int pivotIndex(int* nums, int numsSize) {  
    int totalSum = 0;  
    for (int i = 0; i < numsSize; i++) {  
        totalSum += nums[i];  
    }  
    int leftSum = 0;  
    for (int j = 0; j < numsSize; j++) {  
        if (rightSum == totalSum - leftSum - nums[j]) {  
            return j;  
        }  
        leftSum += nums[j];  //更新下标
    }  
    return -1;  
}