Coding-Challenge-Python/Flatten-Array

script-flatten-function.py

def flatten_array(arr):
  # Write your code here
  flat_list = []
    # Iterate through the outer list
  for element in arr:
      #if type(element) is list:        #using type() to check for nested array OR
      if isinstance(element, list):     #using isinstance() to check for nested (multi-dimensional array
            # If the element is of type list, iterate through the sublist or inner list
          for item in element:
                flat_list.append(item)
      else:
          flat_list.append(element)
  return flat_list


print(flatten_array([1, 2, [3, 4, 5], 6, [7, 8], 9]))
print(flatten_array([[2], [8, 9, 10,], 5, 4, []] ))

script-flatten-output.py

[1, 2, 3, 4, 5, 6, 7, 8, 9]
[2, 8, 9, 10, 5, 4]

script-tests-pass.py

All tests passed!
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