1.用字符串连接切片元素（类似php implode）

package main

import (
	"fmt"
	"strconv"
	"strings"
)

func main() {
	data := []int{104, 101, 108, 108, 111}
	fmt.Println(IntSliceToString(data, ","))
}

func IntSliceToString(intSlice []int, sep string) string {
	strBuilder := new(strings.Builder)
	for i, intValue := range intSlice {
		if i > 0 {
			strBuilder.WriteString(sep)
		}
		strBuilder.WriteString(strconv.Itoa(intValue))
	}
	return strBuilder.String()
}

运行结果：