KazuoMoriwaka/Journal/2006-05

• メモを書いてもそれでマウスパッドとしての性能はおちなさげ。

• 畳表(とびまくったり止まったり。使えない)

• グラデーション柄のマウスパッド(グラデーションのところでとびまくり)

• 布(時々カーソルが動かない。たぶんデコボコのせい?)

• 無地マウスパッド(たまにカーソルがひっかかる)

• PPC用紙(ほぼ完璧)

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def list2range(lst):
    tmplst = lst[:]
    tmplst.sort()
    ranges = []
    current = [None, None]
    for item in tmplst:
        if current[0] != None:
            if current[1] == item:
                current[1] = item + 1
            else:
                ranges.append(tuple(current))
                current = [item, item + 1]
        else:
            # start
            current = [item, item + 1]
    ranges.append(tuple(current))

    return ranges

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if __name__ == '__main__':
    a = [1,2,3,4,5,6,7,8,10,11,12,23,24,25,26]
    b = [(1,9), (10,13), (23, 27)]
    c = list2range(a)
    if b != c:
        print 'failed!'
    else:
        print 'succeed!'
    print c

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def list2range(lst):
    '''convert list -> list of ranges of contiguous numbers
    list of integers -> list of range tuples.
    '''
    tmplst = lst[:]
    tmplst.sort()
    ranges = []
    start = tmplst[0]
    currentrange = [start, start + 1]
    for item in tmplst[1:]:
        if currentrange[1] == item:
            # contiguous
            currentrange[1] += 1
        else:
            # new range start
            ranges.append(tuple(currentrange))
            currentrange = [item, item + 1]
    # last range
    ranges.append(tuple(currentrange))
    return ranges

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def list2range(lst):
    '''make iterator of ranges of contiguous numbers from a list of integers'''
    tmplst = lst[:]
    tmplst.sort()
    start = tmplst[0]
    currentrange = [start, start + 1]
    for item in tmplst[1:]:
        if currentrange[1] == item:
            # contiguous
            currentrange[1] += 1
        else:
            # new range start
            yield tuple(currentrange)
            currentrange = [item, item + 1]
    # last range
    yield tuple(currentrange)

• http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496682

• 数字が重複してたらマズいよ！ とかコメントがついてうれしい。

• 自分が考えてた応用は値が被らないので全然気付いてませんでした(;;;

$ host 3.1415 9265 3589.org 
3.1415 9265 3589.org has address 72.20.33.12
$ host 3.1415 9265 358.org
3.1415 9265 358.org has address 200.58.114.4
$ host 3.1415 9265 35.org 
3.1415 9265 35.org is an alias for premium3.geo.yahoo.akadns.net.
premium3.geo.yahoo.akadns.net has address 68.142.234.103
premium3.geo.yahoo.akadns.net has address 68.142.234.77
premium3.geo.yahoo.akadns.net has address 68.142.234.40
premium3.geo.yahoo.akadns.net has address 68.142.234.37
premium3.geo.yahoo.akadns.net has address 68.142.234.76
premium3.geo.yahoo.akadns.net has address 68.142.234.39
premium3.geo.yahoo.akadns.net has address 68.142.234.104
premium3.geo.yahoo.akadns.net has address 68.142.234.38
3.1415 9265 35.org is an alias for premium3.geo.yahoo.akadns.net.
3.1415 9265 35.org is an alias for premium3.geo.yahoo.akadns.net.
$ host 3.1415 9265 3.org 
3.1415 9265 3.org has address 83.151.29.247
$ host 3.1415 9265.org 
3.1415 9265.org has address 64.34.66.19
$ host 3.1415 926.org 
3.1415 926.org has address 217.160.140.174
$ host 3.1415 92.org 
3.1415 92.org has address 64.20.41.163
Host 3.1415 92.org not found: 2(SERVFAIL)
Host 3.1415 92.org not found: 2(SERVFAIL)
$ host 3.1415 9.org 
3.1415 9.org has address 208.176.116.94
3.1415 9.org mail is handled by 10 mail.crisman.org.
$ host 3.1415.org 
3.1415.org has address 212.227.34.3
$ host 3.141.org 
Host 3.141.org not found: 3(NXDOMAIN)
$ host 3.14.org 
3.14.org has address 64.74.96.243