字符串水题，旋转90度输出。注意字符串的长度和空格的处理。

code：

import java.util.*;public class Main490 {	public static void main(String[] args) {		Scanner scan = new Scanner(System.in);		char[][] str = new char[105][105];		String s;		int[] length = new int[105];		int cnt = 0, mlen = 0;		while(scan.hasNextLine()) {			s = scan.nextLine();			str[cnt] = s.toCharArray();			length[cnt] = s.length();			if(length[cnt] > mlen)				mlen = length[cnt];			cnt ++;		}		for(int i=0; i
     
      =0; j--){				if(length[j] > i)					System.out.print(str[j][i]);				else					System.out.print(" ");			}			System.out.println();		}	}}