Lecture "Brute-force argorithms", exercise 4

[essepuntato]

Write in Python the function def my_range(stop_number), which behaves like the built-in function range() introduced in Section "Insertion sort" and returns a proper list, and accompany the function with the related test case. It is not possible to use the built-in function range() in the implementation.

[ValkyrieCain9]

#DEFINING MY RANGE FUNCTION

def test_my_range(stop_number):
    if my_range(stop_number) == list(range(stop_number)):
        return True
    else:
        return False

def my_range(stop_number):
    output_list=[]
    i = 0
    while i < stop_number:
        output_list.append(i)
        i+=1
    return output_list

print(test_my_range(4))
#returns True

[maridematteis]

[lisitein]

def test_my_range(stop_number):
    result = my_range(stop_number)
    if list(range(stop_number)) == result:
        return True
    else:
        return False

def my_range(stop_number):
    output_list = []
    i = 0
    while i < stop_number:
        output_list.append(i)
        i = i+1
    return output_list

print(range(2))
# range(0, 2)
print(test_my_range(2))
# True
print(my_range(2))
# [0,1]
        

[shiho1000]

# test case
def test_my_range(stop_number, expected):
    result = my_range(stop_number)
    if expected == result:
        return True
    else:
        return False

# algorithm
def my_range(stop_number):
    output_list = []
    index = 0
    
    while index < stop_number:
        output_list.append(index)
        index += 1
    return output_list

# run test
print(test_my_range((5), [0, 1, 2, 3, 4]))
print(test_my_range((0), []))
print(test_my_range((2), [0, 1]))
# returns 
# True
# True
# True

# run algorithm
print(my_range(5))
# returns [0, 1, 2, 3, 4]

[essepuntato]

Hi all, please remember that each testing function must input the parameter of the function to test and the expected result.

[arinee01]

[theair-hub]

[ERendall]

Further ooof.

[nicoldamelio]

[martinaucch]

def test_my_range(stop_number, expected):
    result = my_range(stop_number)
    if expected == result:
        return True
    else:
        return False

def my_range(stop_number):
    output_list = list()
    if stop_number > 0: 
        while len(output_list) < stop_number: 
            output_list.append(stop_number)
            enumerate_list = [position for position, item in enumerate(output_list)]
        return enumerate_list
    else:
        return output_list
    
print(test_my_range(4, [0,1,2,3]))
print(test_my_range(0, []))
print(test_my_range(1, [0]))