message: Update contiguous-array.py
diff: @@ -20,13 +20,12 @@ class Solution(object):
  :rtype: int
  """
  result, count = 0, 0
  - lookup = {0: 0}
  -
  + lookup = {0: -1}
  for i, num in enumerate(nums):
  count += 1 if num == 1 else -1
  if count in lookup:
  - result = max(result, i+1 - lookup[count])
  + result = max(result, i - lookup[count])
  else:
  - lookup[count] = i+1
  + lookup[count] = i
  return result
  