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| package main
import (
"fmt"
"strings"
"strconv"
)
func main() {
//判断字符串是否以 xx开头
var str string = "This is an example of a string"
r := strings.HasPrefix(str,"Th")
fmt.Println(r)
r1 := strings.HasPrefix(str,"th")
fmt.Println(r1)
//以什么结尾
r2 := strings.HasSuffix(str,"ing")
fmt.Println(r2)
//是否包含字符串判断
rr1 := strings.Contains(str,"ex")
fmt.Println(rr1)
//返回 i 在字符串中第一个字符的索引 -1 标示不在字符串中
rr2 := strings.Index(str,"g")
fmt.Println(rr2)
//返回 i 在字符串中最后出现的位置 -1 标示不在字符串中
r3 := strings.LastIndex(str,"g")
fmt.Print(r3)
r4 := strings.IndexRune(str,'i')
fmt.Println(r4)
//字符串替换 strings.Replace(str, old, new, n) string n 设置替换个数 -1时替换全部
r5 := strings.Replace(str,"i"," ii",2)
fmt.Println(r5)
//统计字符i在字符串中出现的次数
r6 := strings.Count(str,"i")
fmt.Println(r6)
//重复字符串
r7 := strings.Repeat(str,5)
fmt.Println(r7)
//小写转换
r8 := strings.ToLower(str)
fmt.Println(r8)
//大写转换
r9 := strings.ToUpper(str)
fmt.Println(r9)
//去除字符串开头或结尾 "g"
s := strings.Trim(str,"g")
fmt.Println(s)
r10 :=strings.Split("his",str)
fmt.Print(r10,str)
r11 := strings.Fields(str)
fmt.Println(r)
for _,v := range r11 {
fmt.Printf("%s \n",v)
}
str = "GO1|The ABC of Go|25"
r12 := strings.Split(str,"|")
fmt.Println(r )
for _, val := range r12 {
fmt.Printf("%s \n", val)
}
fmt.Println(strings.Join(r12 ,";"))
//数字转字符串
fmt.Println(strconv.Itoa(10))
//字符串转数字
fmt.Println(strconv.Atoi("10"))
}
|
