private static int[] subtractRes(BigInt firstNumberBiggerAbsThanSecond, BigInt second)
{
int[] minusOfaAndb = new int[Math.Max(firstNumberBiggerAbsThanSecond.number.Length, second.number.Length)];
int carry = 0;
for (int i = 0; i < Math.Max(firstNumberBiggerAbsThanSecond.number.Length, second.number.Length); ++i)
{
minusOfaAndb[i] += -carry + firstNumberBiggerAbsThanSecond.intAtDigits(i) - second.intAtDigits(i);
carry = minusOfaAndb[i] < 0 ? 1 : 0;
if (carry == 1)
{
minusOfaAndb[i] += BASE;
}
}
return(deleteLeadingZerosOfArray(minusOfaAndb));
}
