[Solved] What is a simple algorithm / approach to store key-value (number-number) pairs *in disk* for quick access by key? [closed]

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What is a simple algorithm / approach to store key-value (number-number) pairs *in disk* for quick access by key? [closed]

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solved What is a simple algorithm / approach to store key-value (number-number) pairs *in disk* for quick access by key? [closed]