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  1. from __future__ import print_function
  2.  
  3. cp = [2, 3, 4, '<', 5, '>', 6]  # note: list is inefficient for deletions in the middle 
  4. i = 0
  5. dp = '>'
  6. flag = False
  7. while 0 <= i < len(cp):
  8.     c = cp[i]
  9.     if c == '<' or c == '>':
  10.         dp = c
  11.         flag = True
  12.     else:  # digit
  13.         print(c, end='')
  14.         if c == 0:
  15.             del cp[i]
  16.             i -= 1
  17.         else:
  18.             cp[i] -= 1
  19.  
  20.     if dp == '>':
  21.         i += 1
  22.     else:
  23.         assert dp == '<'
  24.         i -= 1
  25.  
  26.     if  not (0 <= i  < len(cp)): 
  27.         break
  28.  
  29.     c = cp[i]
  30.     if flag and (c == '>' or c == '<'):
  31.         del cp[i - 1]
  32.         i -= 1
  33.  
Success #stdin #stdout 0.02s 5824KB
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https://ideone.com/CpCZN8
language:
Python 3 (python  3.9.5)
created:
11 years ago
visibility:
secret

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