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Ilya Nevolin
Ilya Nevolin

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Do you even Refactor? 002

Code refactoring is crucial but often overlooked. It can improve the design and performance of existing code.

The Python code below takes about 17 seconds to complete. Refactor the getData function to make it run in less than 5 seconds. Post your answer in the comments.

import time

def getData():
  arr = [5] * 1000 * 1000 * 100
  for i in range(1, len(arr)):
    if i % 5 == 0:
      arr[i] = 0
  return arr

def timed(func):
  def run():
    Tstart = time.time()
    func()  
    Tend = time.time()
    Tdt = round(Tend - Tstart, 2)
    print(Tdt, 'seconds')
  return run

@timed
def main():
  data = getData()
  print('len:', len(data), 'sum:', sum(data))

main()
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