direct_deposit_problem.py

def beta_direct_deposit(pay, percent_split=[1]):
  """What you guys are doing."""
  s = 0
  results = [0]
  for i, v in enumerate(percent_split):
    s += results[i]
    results.append((pay - s) * v)
  residual = pay - sum(results)
  results.append(residual)
  return results[1:]

def intended_direct_deposit(pay, percent_split=[1]):
  """What you should be doing instead."""
  results = []
  for i in percent_split:
    results.append(pay * i)
  residual = pay * (1 - sum(percent_split))
  results.append(residual)
  return results