C Sc 127 A Programming 7: ArrayFun
Collaboration: Solo
Due: 10:00 pm , Thursday 6-Nov via WebCat
This project asks you to solve seven problems requiring arrays. You are asked to write seven methods in one
class named ArrayFun and a test method for each in a unit test named ArrayFunTest. Develop (code and test)
one method at a time.
1) public boolean sumGreaterThan(double[] array, double sum)
Given a filled array of double array elements, return true if the sum of all array elements is greater than sum.
sumGreaterThan( { 1.1, 2.2, 3.3 }, 4.0) true
sumGreaterThan( { 1.1, 2.2, 3.3 }, 6.6) false
2) public int numberOfVowels(char[] array)
Given a filled array of char array elements, return the number of vowels which could be the letters 'a' , 'e', 'i', 'o',
or 'u' in either upper case or lower case.
numberOfVowels({'a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U', 'x', 'z'}) 10
numberOfVowels( {'y', 'Y' } ) 0
numberOfVowels( {'a', 'X', 'a' } ) 2
3) public int numberOfPairs(String[] array)
Return the number of times a pair occurs in array. A pair is any two String values that are equal (case sensitive)
in consecutive array elements.
numberOfPairs( {"a", "b", "c" } ) 0
numberOfPairs( {"b", "a", "a", "b"} ) 1
numberOfPairs( {"a", "a", "a"} ) 2
numberOfPairs( {"a", "a", "b", "b" } ) 2
4) public int stringsLongerThan(String[] array, int len)
Write a test method for stringsLongerThan that takes the array of Strings and returns the number of Strings
with a length greater than len.
stringsLongerThan({"a", "ab", "abc"}, 0) 3
stringsLongerThan({"a", "ab", "abc"}, 2) 1
stringsLongerThan({"a","ab","abc","abcd","abcde","abcdef", "abcdefg"}, 3) 4
5) public int howMany(String[] array, String valueToFind)
Complete method howMany to return the number of elements in an array of Strings that equals valueToFind.
howMany( { "A", "a", "A", "a" }, "A") 2
howMany( {"And", "there", "goes", "another"}, "another") 1
howMany( {"And", "there", "goes", "another"}, "Not Here") 0
