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29 lines
367 B
Go
29 lines
367 B
Go
package one
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import (
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"bytes"
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)
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const empty = -1
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func Solve(buf []byte) (int, error) {
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r := bytes.NewReader(buf)
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expandedRaw, err := parseLines(r)
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if err != nil {
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return 0, err
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}
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disk := newDisk(expandedRaw)
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disk.reorganise()
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var checksum int
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for i, n := range disk.data {
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if n == empty {
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break
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}
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checksum += i * n
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}
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return checksum, nil
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}
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