bubblesort

bubble sort.rb

# Sort the array from lowest to highest
def sort(arr)
  swap = false
  until swap
    swap = true
    (arr.length - 1).times do |x|
      if arr[x] > arr[x +1]
        arr[x], arr[x+1] = arr[x+1], arr[x]
        swap = false
      end
    end
  end 
arr
end

# Find the maximum 
def maximum(arr)
  sort(arr).last
end

def minimum(arr)
  sort(arr).first
end
 
# expect it to return 42 below
result = maximum([2, 42, 22, 02])
puts "max of 2, 42, 22, 02 is: #{result}"

# expect it to return 2 below
result = minimum([2, 42, 22, 02])
puts "min of 2, 42, 22, 02 is: #{result}"

 
# expect it to return nil when empty array is passed in
result = maximum([])
puts "max on empty set is: #{result.inspect}"
result = minimum([])
puts "min on empty set is: #{result.inspect}"
 
result = maximum([-23, 0, -3])
puts "max of -23, 0, -3 is: #{result}"
 
result = maximum([6])
puts "max of just 6 is: #{result}"