Question: In many applications, each data has a fixed format. For identification card number, (a) the first letter must be A, B, ..., Z. (b)

In many applications, each data has a fixed format. For identification card number, (a) the first letter must

In many applications, each data has a fixed format. For identification card number, (a) the first letter must be A, B, ..., Z. (b) the second digit must be 1 or 2, (c) the third part is a sequence of 7 decimal numbers, and (d) the last digit is check digit. Design a good method to convert a given fixed format into an integer. More precisely, design a bijection function between all possible identification card numbers and [0, m] CZ. In the conversion, the check digit is not considered as part of the identification card number.

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