题解 | #字符串排序#

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader;

public class Main{ public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String s; while((s = br.readLine()) != null){ char[] ch = s.toCharArray(); char[] chars = new char[ch.length]; int flag = 65, j=0; while(flag<=90){ for(int i=0; i<ch.length; i++){ if((ch[i]>=65&&ch[i]<=90) || (ch[i]>=97&&ch[i]<=122)){ if(ch[i]==flag || ch[i]== flag+32){ chars[j] = ch[i]; j++; } } } flag++; }

        j=0;
        for(int i=0; i<ch.length; i++){
             if((ch[i]>=65&&ch[i]<=90) || (ch[i]>=97&&ch[i]<=122)){
                 ch[i] = chars[j];
                 j++;
             }
        }
        System.out.println(String.valueOf(ch));
    }
}

}