公牛母牛问题

最新推荐文章于 2022-03-16 23:47:37 发布

ok0011

最新推荐文章于 2022-03-16 23:47:37 发布

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分类专栏：编程学习文章标签：公牛母牛猜数字

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public class Solution {
    public String getHint(String secret, String guess) {
        int bulls = 0;
        int cows = 0;
        int[] nums = new int[10];
        int len = secret.length();
        for (int i = 0; i < len; i++) {
            if (secret.charAt(i) == guess.charAt(i)) {
                bulls++;
            } else {
                if (nums[secret.charAt(i) - '0']++ < 0)
                    cows++;
                if (nums[guess.charAt(i) - '0']-- > 0)
                    cows++;
            }
        }
        return bulls + "A" + cows + "B";
    }

    public static void main(String[] args) {
        String secret = "1807";
        String guess = "7810";
        System.out.println(new Solution().getHint(secret, guess));
    }
}