题解 | 多组_字符串_T组形式

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	reader := bufio.NewReader(os.Stdin)
	var t, n int
	line, _ := reader.ReadString('\n')
	t, _ = strconv.Atoi(strings.TrimSpace(line))
	for k := 0; k < t; k++ {
		line, _ = reader.ReadString('\n')
		n, _ = strconv.Atoi(strings.TrimSpace(line))
		line, _ = reader.ReadString('\n')
		runes := []rune(strings.TrimSpace(line))
		for i := 0; i < n/2; i++ {
			runes[i], runes[n-i-1] = runes[n-i-1], runes[i]
		}
		fmt.Println(string(runes))
	}
}

想使用reader.ReadString('\n')的话，最好一开始就用，防止行阅读错误