def isDivisible(a,b):
    """
    Check if a divides b

    Parameters
    ----------
    a : int
        denotes a in a|b
    b : int
        denotes b in a|b
    return : bool
        return true if a divides b
        return false if a doesn't divide b

    """
    if(a==0 or b%a != 0):
        return False
    else:
        return True