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numUnique

Language/Type: Java arrays array programming
Author: Marty Stepp

Write a method named numUnique that accepts a sorted array of integers as a parameter and that returns the number of unique values in the array. The array is guaranteed to be in sorted order, which means that duplicates will be grouped together. For example, if a variable called list stores the following values: 

int[] list = {5, 7, 7, 7, 8, 22, 22, 23, 31, 35, 35, 40, 40, 40, 41};

then the call of numUnique(list) should return 9 because this list has 9 unique values (5, 7, 8, 22, 23, 31, 35, 40 and 41). It is possible that the list might not have any duplicates. For example if list instead stored this sequence of values: 

int[] list = {1, 2, 11, 17, 19, 20, 23, 24, 25, 26, 31, 34, 37, 40, 41};

Then a call on the method would return 15 because this list contains 15 different values.

If passed an empty list, your method should return 0. Remember that you can assume that the values in the array appear in sorted (nondecreasing) order.

Type your solution here:


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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