If its going to be string anyway why bother with binary system, why dont
make it decimal natively?
Because binary calculations are much quicker and more mechanical.
On the subject of which, another method is to make use of an array of larger
integers, and use bit-shifting/adding operations, which are likely to be
faster (not that I've tested them). I don't know what is done in 'proper'
BigInt classes, but I'd imagine it's something like that.
For example, to multiply such an array by 3, you'd shift the entire array
left by one place and add it to itself, something like this:
0010,1100,1111 * 3 = 0101,1001,1110 + 0010,1100,1111 = 0111, 10101, 11101
And finally you'd carry the extra bits across to make a new array with the
same bit size:
... = 1110, 0110, 1101
Danny
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