The 15th offline real-time how to write reference problem in Python

Click here for details. http://qiita.com/Nabetani/items/0b56395d4c9e7c64b230 I referred to saihon2013's C language implementation.

def search(text, left, right, match):
    longer = match
    for l in xrange(left, len(text)):
        for r in xrange(right, l-1, -1):
            if text[l] == text[r]:
                m = search(text, l+1, r-1, match + (1 if l==r else 2))
                if m > longer: longer = m
                break
    return longer

def solve(text):
    return search(text, 0, len(text)-1, 0)

def test(text, answer):
    result = solve(text)
    print 'OK' if result==int(answer) else "NG", result, answer, text

if __name__ == '__main__':
    0, test( "I_believe_you_can_solve", "9" );
    1, test( "a", "1" );
    2, test( "aa", "2" );
    3, test( "aaa", "3" );
    4, test( "ab", "1" );
    5, test( "aabb", "2" );
    6, test( "ABBA", "4" );
    7, test( "Abba", "2" );
    8, test( "1234567890", "1" );
    9, test( "1234567890987654321", "19" );
    10, test( "abcdcba", "7" );
    11, test( "0a1b2c3d4c5b6a7", "7" );
    12, test( "abcdcba0123210", "7" );
    13, test( "abcdcba_123210", "7" );
    14, test( "_bcdcba0123210", "7" );
    15, test( "abcddcba0123210", "8" );
    16, test( "abcdcba01233210", "8" );
    17, test( "a0bc1dc2ba3210a", "9" );
    18, test( "a0bc1ddc2ba3210", "8" );
    19, test( "3a0bc1ddc2ba3210", "10" );
    20, test( "11oooo1111o1oo1o111ooooooooooo", "20" );
    21, test( "11o1111o1111oo11ooo11111ooo1oo", "20" );
    22, test( "111111oo11o111ooo1o1ooo11ooo1o", "21" );
    23, test( "11o1o1o11oo11o11oo111o1o1o11oo", "27" );
    24, test( "oo111o1o11o1oo1ooo11o1o11o1o1o", "27" );
    25, test( "1o1oo11111o1o1oo1o1o1111oo1o1o", "28" );
    26, test( "QQooooQooooQQyQoyQQQyyyyQQoyoy", "15" );
    27, test( "oQoooQooooQyoyQoyoyyyQQyQQQQoQ", "16" );
    28, test( "yyyyyooyQyyyoyyQyyooyQoQoQQoQy", "17" );
    29, test( "yyQoyQoyyQyQQoyooooyyQQyQyooQy", "24" );
    30, test( "oQQooQoQyQQoyoQQoQyQyQyQoQoooo", "24" );
    31, test( "oQQyQQyyQyQQoooyQQyyyQQQyyQQoy", "25" );
    32, test( "WAk9iHI4jVDlStyudwTNqE138kwan2", "3" );
    33, test( "c43fIu1Mlz0K9hEVOgGcUdbeB5ksa7", "3" );
    34, test( "CAbYcW5VqHjzFdIkH_61PM0TsyRuie", "3" );
    35, test( "jInQnUvSayrJTsQWujovbbqW0STvoj", "10" );
    36, test( "iZDrvpUKgtj3FrZsZ4CLjrEgUdZzQG", "11" );
    37, test( "ROgYUOu6er_DA7nB6UGquO1GUHC62R", "11" );
    38, test( "Oh_be_a_fine_girl_kiss_me", "9" );
    39, test( "8086_6502_6809_Z80", "11" );
    40, test( "xcode_visualstudio_eclipse", "11" );
    41, test( "word_excel_powerpoint_outlook", "9" );
    42, test( "abcdefghijklmnopqrstuvwxyz0123", "1" );