Method Decode

encode_and_decode_strings_271/solution.go:24–49

Decodes a single string to a list of strings.

(strs string)

// Decodes a single string to a list of strings.
func (codec *Codec) Decode(strs string) []string {
	s := make([]string, 0)
	for i := 0; i < len(strs); i++ {
		var b bytes.Buffer

		// read string header until an underscore is seen
		charCnt := 0
		for string(strs[i]) != "_" {
			l, _ := strconv.Atoi(string(strs[i]))
			charCnt = (charCnt + l) * 10
			i++
		}
		charCnt /= 10

		// add charCnt characters to the buffer
		for j := 1; j <= charCnt; j++ {
			b.WriteByte(strs[i+j])
		}
		s = append(s, b.String())

		// move i forward over the last read string
		i += charCnt
	}

	return s
}