import random


def integer(start, end, steps=1):
    """
        Function integer
        Return a random integer

        Inputs:
        - start: minimum allowed value
        - end: maximum allowed value (inclusive)
        - steps: the interval from which to select the random integers

        Output: a string containing a random integer
    """
    if type(steps) == float or steps < 1:
        steps = 1
        
    return str(int(random.randrange(start, end + 1, steps)))