Go字符串操作深入解析

func reverseString(s []byte)  {
    //双指针，一个放头一个放尾
    i:=0 
    j:=len(s)-1
    //反转这两个位置的元素
    for i<j {
        s[i],s[j]=s[j],s[i]
        i++
        j--
    }
    
}

s := []byte(str)
reverseString(s)
fmt.Println(string(s))

# 拆分
strList := strings.Split("Go语言,channel,并发", ",")
fmt.Println(strList)
# 合并
str := strings.Join(strList,",")
fmt.Println(str)

strings.ToLower("2s5G") == "2s5g"
strings.ToUpper("2s5G") == "2S5G"

fmt.Println(strings.EqualFold("abc", "ABC"))

func main() {
	name := "ab_cde_as"
	strList := strings.Split(name,"_")
	for index,str := range strList{
		strList[index] = strings.ToUpper(string(str[0])) + str[1:]
	}
	name = strings.Join(strList,"")
	fmt.Println(name)
}

strings.Replace("ip:10.1.1.1", "10.1.1.1", "0.0.0.0", -1)

regexStr := "https*://[^\\s]*(jpg|png)"
	if ok, _ := regexp.MatchString(regexStr, "/file/imgs/upload/202302/01/maih4ura2c1.jpg"); ok {
		fmt.Println("ok")
	}

data := `
![](/file/imgs/upload/202302/01/bqo4yd2pcco.jpg)
[](Https://coding3min.com/abc.html)
![](/file/imgs/upload/202302/01/l20dorlo5ju.jpg)
https://coding3min.com
`
	re, _ := regexp.Compile(regexStr)
	picList := re.FindAllString(data,-1)
	sort.Strings(picList)
	for k,v:=range picList{
		if k!=0 && picList[k]==picList[k-1]{
			continue
		}
		//省略改变图片链接
		afterStr := "xxx"
		re,_ = regexp.Compile(v)
		data = re.ReplaceAllString(data,afterStr)
	}
	fmt.Println(data)

strings.Compare("a", "b")

fmt.Println(strings.Contains("hello", "he"))

fmt.Println(strings.Count("happy", "p")) 

fmt.Println(strings.HasPrefix("hello", "he"))
fmt.Println(strings.HasSuffix("hello", "lo"))

fmt.Println(strings.Index("abandon already", "a")) 

fmt.Println(strings.LastIndex("abandon already", "a"))