def mutate_length(individual: Component, length_upper_bound: int,
length_lower_bound: int) -> Component:
"""
Modify length of both segments of an individual
:param individual: Individual to be modified
:param length_upper_bound: Upper bound for segment length
:param length_lower_bound: Lower bound for segment length
:return: Individual with modified lengths of two segments
"""
individual.left_length_coef += random.uniform(-0.1, 0.1)
individual.right_length_coef += random.uniform(-0.1, 0.1)
individual.left_length_coef = min(individual.left_length_coef,
length_upper_bound)
individual.right_length_coef = min(individual.right_length_coef,
length_upper_bound)
individual.left_length_coef = max(individual.left_length_coef,
length_lower_bound)
individual.right_length_coef = max(individual.right_length_coef,
length_lower_bound)
return individual
