{ "data": { "question": { "questionId": "299", "questionFrontendId": "299", "boundTopicId": null, "title": "Bulls and Cows", "titleSlug": "bulls-and-cows", "content": "

You are playing the Bulls and Cows game with your friend.

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You write down a secret number and ask your friend to guess what the number is. When your friend makes a guess, you provide a hint with the following info:

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Given the secret number secret and your friend's guess guess, return the hint for your friend's guess.

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The hint should be formatted as "xAyB", where x is the number of bulls and y is the number of cows. Note that both secret and guess may contain duplicate digits.

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Example 1:

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\nInput: secret = "1807", guess = "7810"\nOutput: "1A3B"\nExplanation: Bulls are connected with a '|' and cows are underlined:\n"1807"\n  |\n"7810"
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Example 2:

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\nInput: secret = "1123", guess = "0111"\nOutput: "1A1B"\nExplanation: Bulls are connected with a '|' and cows are underlined:\n"1123"        "1123"\n  |      or     |\n"0111"        "0111"\nNote that only one of the two unmatched 1s is counted as a cow since the non-bull digits can only be rearranged to allow one 1 to be a bull.\n
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Constraints:

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