22 lines
465 B
Go
22 lines
465 B
Go
package hamming
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import "errors"
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// TestVersion is an exercism thing
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const TestVersion = 2
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// Distance measures the hamming distance between two sequences
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// and returns the number if different bytes and an error value
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func Distance(seq1, seq2 string) (int, error) {
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if len(seq1) != len(seq2) {
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return -1, errors.New("Strands must be equal length")
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}
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var ret int
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for i := 0; i < len(seq1); i++ {
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if seq1[i] != seq2[i] {
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ret++
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}
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}
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return ret, nil
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}
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