PHP Classes

Calculus: Calculate the count of numbers with unique digits

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calculus 1.0.1GNU General Publi...5.3Algorithms, PHP 5


This class can calculate the count of numbers with unique digits.

It takes a given range of numbers defined by a minumum and a maximum and determines how many numbers within range have unique digits.

Optionally the class may consider also numbers with leading zeros.

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A number may be unique if it contains a sequence of unique digits.

This class can determine the uniqueness of a number by counting the number of unique digits it contains.

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