How to convert string to array in Go language

Conversion method: 1. Use Fields() to split the string by spaces and convert it into an array, the syntax is "arr := strings.Fields(s)"; 2. Use Split() to split the string by strings, Syntax "arr := strings.Split(s,sep)"; 3. Use FieldsFunc() to split the string by characters, syntax "arr := strings.FieldsFunc(s,f func(rune) bool)".

The operating environment of this tutorial: Windows 7 system, GO version 1.18, Dell G3 computer.

The Go language provides multiple methods to split strings into arrays. And splitting strings can be divided into: splitting by spaces, splitting by strings and splitting by characters.

Method 1: Use the Fields() function to split the string by spaces and convert it into an array

arr := strings.Fields(s)

Parameter	Description
s	The string to be split.

Return value

• Returns the split string array.

Explanation

• The string array returned after dividing the string s according to spaces is stored in the variable arr.

Example:

package main
import (
	"fmt"
	"strings"
)
func main() {
	//使用 strings.Fields 函数，实现按空格分割字符串
	strHaiCoder := "Hello  HaiCoder"
	strArr := strings.Fields(strHaiCoder)
	fmt.Println("strArr =", strArr)
}

Method 2: Using Split () function splits string by string

arr := strings.Split(s,sep)

Parameter	Description
s	The string to be split.
sep	The delimiter of the string.

Return value

• Returns the split string array.

Explanation

• The string array returned after dividing the string s according to the string sep is stored in the variable arr.

Example:

package main
import (
	"fmt"
	"strings"
)
func main() {
	//使用 strings.Split 函数，实现按字符串分割字符串
	strHaiCoder := "Hello,HaiCoder Hello,World"
	strArr := strings.Split(strHaiCoder, "Hello")
	fmt.Println("strArr =", strArr)
}

Method 3: Use FieldsFunc() function Split string by characters

arr := strings.FieldsFunc(s,f func(rune) bool)

Parameter	Description
s	The string to be split.
f	Split function.

Return value

• Returns the split string array.

Explanation

• Split the string s according to the string according to the function f. The string array returned after the split is stored in the variable arr middle.

Example:

package main
import (
	"fmt"
	"strings"
)
func checkSpiltRune(r rune)bool{
	if r > 97{
		return true
	}
	return false
}
func main() {
	//使用 strings.FieldsFunc 函数，实现按字符分割字符串
	strHaiCoder := "Hello,HaiCoder,Hello,World"
	strArr := strings.FieldsFunc(strHaiCoder, checkSpiltRune)
	fmt.Println("strArr =", strArr)
}

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