java基础之字符串字母大小写转换、倒序
/** * 字符串字母大小写转换、并倒序输出 * zzl */public class Shuffle {public static void main(String[] args) { String str = "SDdfsDdSwqrewASDASD"; //字符串转成char数组 char [] ch = str.toCharArray(); StringBuffer buffer = new StringBuffer(); for(int i=str.length()-1;i>=0;i--){ if(ch[i]>='A'&&ch[i]<='Z'){ buffer.append(String.valueOf(ch[i]).toLowerCase()); }else if(ch[i]>='a'&&ch[i]<='z'){ buffer.append(String.valueOf(ch[i]).toUpperCase()); } } System.out.println(buffer.toString());}}