題目 https://leetcode-cn.com/problems/find-numbers-with-even-number-of-digits/submissions/
int findNumbers(int* nums, int numsSize){
int i,j,count=0;
for(i=0;i<numsSize;i++){
j = nums[i]/10;
if(j > 0 && j<10)
{
count++;
continue;
}
j = nums[i]/1000;
if(j > 0 && j<10)
{
count++;
continue;
}
}
return count;
}