//13
int duplicateInArray(int nums, int numsSize){
int i,j,flag=-1;
for(i=0;i[HTML_REMOVED]numsSize)
{
flag=-1;
break;
}
for(j=i+1;j<numsSize;j++)
if((nums+i)==(nums+j))
flag=(nums+i);
}
return flag;
}