# encoding:utf-8
# 去除相邻的重复字符
def RemoveAdjacentRepeatCharacters(a):
    if(a==''):
        return a
    b=''
    for i in a:
        if (b == ''):
            b += i
        if(i==b[len(b)-1]):
            pass
        else:
            b=b+i
    return b
# 去除重复字符

#这里需要注意的是：if(len(a)==0 | len(a)==1)这个相对上面的较为优化 因为不用每次判断 if(b=='')

def DistinctCharacter(a):
    if(len(a)==0 | len(a)==1):
        return a
    b=a[0]
    for i in a[1:]:
        if (b.__contains__(i)):
            pass
        else:
            b = b + i
    return b
if __name__ == '__main__':
    a = 'abbcdddddccccccccccccccccccccd'
    print(RemoveAdjacentRepeatCharacters(a))
    print(DistinctCharacter(a))