exercise_40.rb

# Exercise 40
# You will write a method, find_peaks(array), that accepts an array of integers
# The method should return an array containing all of "peaks" of the array.
# An element is considered a "peak" if it is greater than both it's left and right neighbour.
# The first or last element of the array is considered a "peak" if it is greater than it's one neighbour

# Write Your method code here

# Driver Code: Do not edit under this line

# check_solution runs a single test case and prints whether it was
# successful or not.
def check_solution(test_number, array, expected)
    actual = find_peaks(array)
    if actual != expected
        puts "Test ##{test_number}: Incorrect value: got #{actual}, expected #{expected}"
        return false
    end

    puts "Test ##{test_number}: Correct"
    return true
end

# run_tests runs each of the test cases.
def run_tests()
    check_solution(1, [1, 3, 5, 4], [5])
    check_solution(2, [4, 2, 3, 6, 10], [4, 10])
    check_solution(3, [4, 2, 11, 6, 10], [4, 11, 10])
end

# Execute the tests.
run_tests()