bool isStraight(int* nums, int numsSize){
    int i,j;
   for(i=0;i<=numsSize-2;++i)
        for(j=i+1;j<=numsSize-1;++j)
        {
            if(nums[i]==nums[j]&&nums[i]!=0)
                return false;
            if((nums[i]-nums[j]>4||nums[i]-nums[j]<-4)&&nums[i]!=0&&nums[j]!=0)
                return false;
        }
    return true;
}