1. 题目

读题

考查点

2. 解法

思路

代码逻辑

具体实现

public class Solutions {

    public static void main(String[] args) {
        System.out.println(solution(10, new int[]{2, 3, 4, 8}, new int[]{2, 5}));
        System.out.println(solution(10, new int[]{2, 3, 4, 8}, new int[]{3, 4}));
    }

    public static int solution(int L, int[] stones, int[] distances) {
        Arrays.sort(stones);

        int minStep = distances[0];
        int maxStep = distances[1];

        int i = 0;
        int ans = 0;
        while (i < L) {
            i = jump(i + minStep, i + maxStep, stones);
            if (contain(stones, i)) {
                ans++;
            }
        }
        return ans;
    }

    public static int jump(int min, int max, int[] stones) {
        for (int i = max; i >= min; i--) {
            if (!contain(stones, i)) {
                return i;
            }
        }
        return max;
    }

    public static boolean contain(int[] stones, int x) {
        for (int i = 0; i < stones.length; i++) {
            if (stones[i] == x) {
                return true;
            }
        }
        return false;
    }
}

3. 总结