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Nov 13th, 2019
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  1. def question5(k, text):
  2.     current_len = 0
  3.     letter = text[0]
  4.     for i in range(1,len(text)):
  5.         if text[i] == letter:
  6.             current_len += 1
  7.  
  8.         else:
  9.             letter = text[i]
  10.             current_len = 1
  11.  
  12.         if current_len == k:
  13.             print(letter*k)
  14.             return
  15.  
  16.     print("no such substring")
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