45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
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package main //同文件包的声明 需要保持一直
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import (
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"fmt"
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"strconv"
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"strings"
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)
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func main() {
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var s string = "golang你好"
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fmt.Println(len(s))
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for i, value := range s {
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fmt.Printf("%d", "%c", i, value)
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}
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r := []rune(s)
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for i := 0; i < len(r); i++ {
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fmt.Println(r[i])
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}
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num1, _ := strconv.Atoi("666")
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fmt.Println(num1)
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//整数转成字符串
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st1 := strconv.Itoa(88)
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fmt.Println(st1)
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//统计字符串中有几个相同的
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count := strings.Count("golanggolang", "golang")
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fmt.Println(count)
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//不区分大小写
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flag := strings.EqualFold("go", "GO")
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fmt.Println(flag)
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//区分大小写
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fmt.Println("hello" == "HELLO")
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//字符串替换
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ss := strings.Replace("gogogo", "go", "golang", -1)
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fmt.Println(ss)
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//按照字符串，为分割符标识，将字符串进行切割分成字符数组
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a := strings.Split("java-go", "-")
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fmt.Println(a)
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//大小写切换
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fmt.Println(strings.ToLower("GO"))
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fmt.Println(strings.ToUpper("go"))
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//去除空格！
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fmt.Println(strings.TrimSpace(" go "))
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}
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