Lecture "Recursion", exercise 1

[essepuntato]

Define a recursive function def exponentiation(base_number, exponent) for implementing the exponentiation operation. Test (by implementing the related test case) it on the following inputs: 3⁴, 17¹, and 2⁰.

[epistrephein]

# Code
def exponentiation(base_number, exponent):
    if exponent == 0:
        return 1
    else:
        return base_number * exponentiation(base_number, exponent - 1)

# Test case
def test_exponentiation(base_number, exponent, expected):
    result = exponentiation(base_number, exponent)
    if expected == result:
        return True
    else:
        return False

# Test runs
print(test_exponentiation(3, 4, 81))   # True
print(test_exponentiation(17, 1, 17))  # True
print(test_exponentiation(2, 0, 1))    # True

[KikaYang]

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[maridematteis]

[mir-pin]

[ValkyrieCain9]

def test_exponentiation(base_num, exponent, expected):
    if exponentiation(base_num, exponent) == expected:
        return True
    else:
        return False

def exponentiation(base_num, exponent):
    if exponent == 0:
        return 1
    else:
        return base_num * exponentiation(base_num,exponent-1)

print(test_exponentiation(3,4,81))
#True
print(test_exponentiation(17,1,17))
#True
print(test_exponentiation(2,0,1))
#True

I uploaded this from my phone as I don’t have my laptop this week so if there are any errors please let me know

[theair-hub]

[shiho1000]

def test_exponentiation(base_number, exponent, expected):
    result = exponentiation(base_number, exponent)
    if expected == result:
        return True
    else:
        return False

def exponentiation(base_number, exponent):
    if exponent == 0:
        return 1
    else:
        return base_number * exponentiation(base_number, exponent -1)

print(test_exponentiation(3,4,81)) 
#True
print(test_exponentiation(17,1,17))
#True
print(test_exponentiation(20,0,1))
#True

[lisitein]

def test_exponentiation(base_number, exponent, expected):
    expected = base_number ** exponent
    result = exponentiation(base_number, exponent)
    if expected == result:
        return True

def exponentiation(base_number, exponent):
    if exponent == 0:
        return 1
    elif exponent < 0:
        return 1 / base_number * exponentiation(base_number, exponent+1)
    else:
        return base_number * exponentiation(base_number, exponent-1)

print (test_exponentiation(3,4,81))#TRUE
print (exponentiation(3,4))
print (test_exponentiation(17,1,17))#TRUE
print (exponentiation(17,1))
print (test_exponentiation(2,0,1))#TRUE
print (exponentiation(2,0))
print (test_exponentiation(2,-1,0.5))#TRUE
print (exponentiation(2,-1))

[martinamrc]

# Testing the function
def test_exponentiation(base_number, exponent, expected):
    result = exponentiation(base_number, exponent)
    if expected == result:
       return True
    else:
       return False

# Code 
def exponentiation(base_number, exponent):
    if exponent == 0:
       return 1
    else:
       res =  exponentiation(base_number, exponent - 1)      
       return base_number * res

print(test_exponentiation(2, 0, 1))
print(test_exponentiation(3, 4, 81))
print(test_exponentiation(17, 1, 17))

print(exponentiation(2, 3))
print(exponentiation(2, 8))

[arinee01]

[yutong316]

[justyna09549]

[orboboro]

def test_exponentiation(base_number, exponent, expected):

    result=exponentiation(base_number,exponent)

    if result!=expected:

        return False

    else:
        return True

def exponentiation(base_number, exponent):

    if exponent == 0:

        if base_number == 0:

            return "indefinito"

        return 1

    if exponent < 0:

        return 1 / (base_number * exponentiation(base_number, -(exponent) - 1))

    else:

        return base_number * exponentiation(base_number, exponent - 1)

test_exponentiation(0, 0, "indefinito")
#True
test_exponentiation(2, 1, 2)
#True
test_exponentiation(2, 4 16)
#True
test_exponentiation(-2, 2, 4)
#True
test_exponentiation(2, -2, 1/4)
#True

[ERendall]

[digitalctrlv]

def test_case(base_number, exponent, expected):
    result = exponentiation(base_number, exponent)
    if result == expected:
        return True
    else:
        return False

def exponentiation(base_number, exponent):
    if exponent == 0:
        return 0
    else:
        return base_number + exponentiation(base_number, exponent-1)

print(test_case(3, 4, 12))
print(test_case(17, 1, 17))
print(test_case(2, 0, 0))

True
True
True