题解 | #字符串变形#

package main

import (
	"strings"
)

/**
 * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
 *
 *
 * @param s string字符串
 * @param n int整型
 * @return string字符串
 */
func trans(s string, n int) string {
	// write code here
    return Trans(s)
}

func Trans(in string) (res string) {

	out := ReverseSingle(in)
	splits := strings.Split(out, " ")
	reverseList := make([]string, 0)
	for i := len(splits) - 1; i >= 0; i-- {
		reverseList = append(reverseList, splits[i])
	}
    res = strings.Join(reverseList, " ")
	return res
}

func ReverseSingle(s string) string {
	singles := []rune(s)
	for i := 0; i < len(singles); i++ {
		if singles[i] >= 65 && singles[i] <= 90 {
			singles[i] += 32
		} else if singles[i] >= 97 && singles[i] <= 122 {
			singles[i] -= 32
		}
	}
	return string(singles)
}