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BJP5 Exercise 4.20: numUnique

Language/Type: Java if/else method basics return
Author: Leslie Ferguson (on 2019/09/19)

Write a method named numUnique that takes three integers as parameters and that returns the number of unique integers among the three. For example, the call numUnique(18, 3, 4) should return 3 because the parameters have 3 different values. By contrast, the call numUnique(6, 7, 6) would return 2 because there are only 2 unique numbers among the three parameters: 6 and 7.

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This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above.

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