递增递减显示数字列表1-10

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#!/usr/bin/env pythondef increase(start, stop):    print '#' * 20    lt = range(start, stop)    length = len(lt)    i = -(length - 1)    while i <= -1:        lt = range(start, stop)        lt = lt[0:i]        for n in lt:            print n,        print '\n',        i += 1           lt = range(start, stop)    for n in lt:        print n,    print '\n',def deciline(start, stop):    print '#' * 20    lt = range(start, stop)    for n in lt:        print n,    print '\n',    i = -1    length = len(lt)    while i >= -length:        lt = range(start, stop)        lt = lt[:i]        for n in lt:            print n,        if i == -(length - 1):            pass        else:            print '\n',        i += -1   if __name__ == "__main__":    increase(1,11)    deciline(1,11)

运行结果如下（先递增后递减）：

####################
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 10
####################
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7
1 2 3 4 5 6
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

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