文本反转

复制import sys

# 字符反转
s = "hello, 世界"
reversed_chars = s[::-1]
print(reversed_chars)  # 界世 ,olleh

# 单词反转（按空格拆分，保留顺序）
text = "hello world foo"
reversed_words = " ".join(word[::-1] for word in text.split())
print(reversed_words)  # olleh dlrow oof

# 行反转
lines = "line1\nline2\nline3"
reversed_lines = "\n".join(lines.splitlines()[::-1])
print(reversed_lines)
# line3
# line2
# line1

复制package main

import (
	"fmt"
	"strings"
)

func reverseString(s string) string {
	runes := []rune(s)
	for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
		runes[i], runes[j] = runes[j], runes[i]
	}
	return string(runes)
}

func main() {
	// 字符反转（支持 Unicode）
	fmt.Println(reverseString("hello, 世界")) // 界世 ,olleh

	// 单词反转
	words := strings.Fields("hello world foo")
	for i, w := range words {
		words[i] = reverseString(w)
	}
	fmt.Println(strings.Join(words, " ")) // olleh dlrow oof

	// 行反转
	lines := strings.Split("line1\nline2\nline3", "\n")
	for i, j := 0, len(lines)-1; i < j; i, j = i+1, j-1 {
		lines[i], lines[j] = lines[j], lines[i]
	}
	fmt.Println(strings.Join(lines, "\n"))
	// line3
	// line2
	// line1
}

复制// 字符反转（支持 Unicode）
const s = 'hello, 世界';
const reversedChars = [...s].reverse().join('');
console.log(reversedChars); // 界世 ,olleh

// 单词反转
const text = 'hello world foo';
const reversedWords = text.split(' ').map(w => [...w].reverse().join('')).join(' ');
console.log(reversedWords); // olleh dlrow oof

// 行反转
const lines = 'line1\nline2\nline3';
const reversedLines = lines.split('\n').reverse().join('\n');
console.log(reversedLines);
// line3
// line2
// line1