{ "data": { "question": { "questionId": "1272", "questionFrontendId": "1169", "boundTopicId": null, "title": "Invalid Transactions", "titleSlug": "invalid-transactions", "content": "

A transaction is possibly invalid if:

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You are given an array of strings transaction where transactions[i] consists of comma-separated values representing the name, time (in minutes), amount, and city of the transaction.

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Return a list of transactions that are possibly invalid. You may return the answer in any order.

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Example 1:

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\nInput: transactions = ["alice,20,800,mtv","alice,50,100,beijing"]\nOutput: ["alice,20,800,mtv","alice,50,100,beijing"]\nExplanation: The first transaction is invalid because the second transaction occurs within a difference of 60 minutes, have the same name and is in a different city. Similarly the second one is invalid too.
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Example 2:

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\nInput: transactions = ["alice,20,800,mtv","alice,50,1200,mtv"]\nOutput: ["alice,50,1200,mtv"]\n
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Example 3:

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\nInput: transactions = ["alice,20,800,mtv","bob,50,1200,mtv"]\nOutput: ["bob,50,1200,mtv"]\n
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Constraints:

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