LeetCode 824. 山羊拉丁文

题目链接：山羊拉丁文

题解标签：模拟、遍历

思路：每日水题，纯模拟

代码：

class Solution {
        public String toGoatLatin(String sentence) {
            Set vowels = new HashSet<>(Arrays.asList('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'));
            StringBuilder suffix = new StringBuilder();
            StringBuilder ans = new StringBuilder();
            String first = "";
            for (int i = 0; i < sentence.length(); i++) {
                char c = sentence.charAt(i);
                boolean isFirst = (i == 0 || sentence.charAt(i - 1) == ' ');
                if (isFirst && !vowels.contains(c)) first = c + "";
                else if (c != ' ') ans.append(c);
                if (c == ' ') {
                    suffix.append('a');
                    ans.append(first).append("ma").append(suffix).append(c);
                    first = "";
                }
            }
            suffix.append('a');
            ans.append(first).append("ma").append(suffix);
            return ans.toString();
        }
    }

运行结果：
            执行耗时:2 ms,击败了80.74% 的Java用户
            内存消耗:39.5 MB,击败了74.62% 的Java用户