25 lines
404 B
Go
25 lines
404 B
Go
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// +build solution
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package utf8reverse
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import (
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"unicode/utf8"
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)
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func Reverse(input string) string {
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rs := []rune{}
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sz := 0
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for len(input) > 0 {
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r, n := utf8.DecodeRuneInString(input)
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rs = append(rs, r)
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sz += utf8.RuneLen(r)
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input = input[n:]
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}
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bs := make([]byte, sz)
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for i, j := 0, 0; i < len(rs); i++ {
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n := utf8.EncodeRune(bs[j:], rs[len(rs)-i-1])
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j += n
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}
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return string(bs)
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}
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