class Solution:
    # @param A : integer
    # @param B : integer
    # @return a list of integers
    def stepnum(self, A, B):
        adjacents = []

        for i in range(A,B+1):
            if self.isAdjacent(str(i)):
                adjacents.append(i)

        return adjacents

    def isAdjacent(self, strNum):

        for letter in range(0,len(strNum)-1):
            first = int(strNum[letter])
            second = int(strNum[letter+1])
            if abs(first - second) is not 1:
                return False

        return True