Welcome to All Your Base on Exercism's Go Track.
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Convert a number, represented as a sequence of digits in one base, to any other base.
Implement general base conversion. Given a number in base a, represented as a sequence of digits, convert it to base b.
- Try to implement the conversion yourself. Do not use something else to perform the conversion for you.
About Positional Notation
In positional notation, a number in base b can be understood as a linear combination of powers of b.
The number 42, in base 10, means:
(4 * 10^1) + (2 * 10^0)
The number 101010, in base 2, means:
(1 * 2^5) + (0 * 2^4) + (1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (0 * 2^0)
The number 1120, in base 3, means:
(1 * 3^3) + (1 * 3^2) + (2 * 3^1) + (0 * 3^0)
I think you got the idea!
Yes. Those three numbers above are exactly the same. Congratulations!
Assumptions:
- Zero is always represented in outputs as [0] instead of [].
- In no other instances are leading zeroes present in any outputs.
- Leading zeroes are accepted in inputs.
- An empty sequence of input digits is considered zero, rather than an error.
Handle problem cases by returning an error whose Error() method returns one of following messages:
- input base must be >= 2
- output base must be >= 2
- all digits must satisfy 0 <= d < input base
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