力扣 Line 15: Char 54: runtime error: signed integer overflow: 2000000000 + 1000000000 cannot be repre
int 超了，数据是四个1000000000相加，将int改为double
double tmp=((double)nums[i]+nums[j]+nums[l]+nums[r]); double先强转int 超了，数据是四个1000000000相加，将int改为double
double tmp=((double)nums[i]+nums[j]+nums[l]+nums[r]); double先强转