LC.P1041[困于环中的机器人]

发表于2023-04-11|更新于2023-04-11|LeetCode

|字数总计:99|阅读时长:1分钟|阅读量:

方法一：模拟

class Solution {
    public boolean isRobotBounded(String instructions) {
        int[] dist = new int[4];
        int k = 0;
        for (int i = 0; i < instructions.length(); ++i) {
            char c = instructions.charAt(i);
            if (c == 'L') k = (k + 1) % 4;
            else if (c == 'R') k = (k + 3) % 4;
            else ++dist[k];
        }
        return (k != 0) || (dist[0] == dist[2] && dist[1] == dist[3]);
    }
}