1324. 竖直打印单词

解法一

模拟。找出长度最长的单词，确定新单词的长度。按题目要求进行添加新字符，并去除结尾空格。

import java.util.ArrayList;
import java.util.List;
class Solution {
    public List<String> printVertically(String s) {
        String[] wordArr = s.split(" ");
        int len = 0;
        for (String str : wordArr) {
            len = Math.max(len, str.length());
        }
        List<String> ansArr = new ArrayList<>(len);
        for (int i = 0; i < len; ++i) {
            StringBuilder stringBuilder = new StringBuilder();
            for (int j = 0; j < wordArr.length; ++j) {
                if (wordArr[j].length() <= i) {
                    stringBuilder.append(' ');
                } else {
                    stringBuilder.append(wordArr[j].charAt(i));
                }
            }
            for (int j = stringBuilder.length() - 1; j >= 0; --j) {
                if (stringBuilder.charAt(j) == ' ') {
                    stringBuilder.deleteCharAt(j);
                } else {
                    break;
                }
            }
            ansArr.add(stringBuilder.toString());
        }
        return ansArr;
    }
}