压缩字符

leetcode-443压缩字符，堆屎山代码，哈哈哈！

func Compress(chars []byte) int {
    //双指针法
    if len(chars) <= 0 {
        return 0
    }
    s := make([]byte, 0)
    lows, fast := 0, 0
    for fast <= len(chars) {
        if fast == len(chars) {
            pTotal := fast - lows
            if pTotal == 1 {
                s = append(s, chars[lows])
                lows = fast
                break
            }
            if pTotal >= 10 {
                s = append(s, chars[lows])
                s = append(s, []byte(strconv.Itoa(pTotal))...)
                lows = fast
                break
            }
            s = append(s, chars[lows])
            s = append(s, []byte(strconv.Itoa(pTotal))...)
            lows = fast
            break
        }
        if chars[lows] != chars[fast] {
            pTotal := fast - lows
            if pTotal == 1 {
                s = append(s, chars[lows])
                lows = fast
                continue
            }
            if pTotal >= 10 {
                s = append(s, chars[lows])
                s = append(s, []byte(strconv.Itoa(pTotal))...)
                lows = fast
                continue
            }
            s = append(s, chars[lows])
            s = append(s, []byte(strconv.Itoa(pTotal))...)
            lows = fast
            continue
        }
        fast++
    }
    for i := 0; i < len(s); i++ {
        chars[i] = s[i]
    }
    chars = chars[:len(s)]
    return len(chars)
}

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