题解 | 单组_二维字符数组

package main

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

func main() {
	reader := bufio.NewReader(os.Stdin)
	line, _ := reader.ReadString('\n')
	part := strings.Split(strings.TrimSpace(line), " ")
	n, _ := strconv.Atoi(part[0])
	m, _ := strconv.Atoi(part[1])
	var runes []rune
	for k := 0; k < n; k++ {
		line, _ := reader.ReadString('\n')
		runes1 := []rune(strings.TrimSpace(line))
		runes = append(runes, runes1...)
		if k < n-1 {
			runes = append(runes, '\n')
		}
	}
	x := n*m + n - 1
	for i := 0; i < x/2; i++ {
		runes[i], runes[x-i-1] = runes[x-i-1], runes[i]
	}
	fmt.Println(string(runes))
}