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Results of GPT-4 on HumanEval/90

Date: 18 July, 2023
Model: gpt-4
Temperature: 0.2
Passing runs: 10
Total runs: 10
Success rate: 100%

Prompt

Tokens: 150

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """

The above is an incomplete Python code fragment. Return the complete and correct code with no additional text.

Correct solution

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """lst = sorted(set(lst))
    return None if len(lst) < 2 else lst[1]

Unit tests

def check(candidate):

    # Check some simple cases
    assert candidate([1, 2, 3, 4, 5]) == 2
    assert candidate([5, 1, 4, 3, 2]) == 2
    assert candidate([]) == None
    assert candidate([1, 1]) == None
    assert candidate([1,1,1,1,0]) == 1
    assert candidate([1, 0**0]) == None
    assert candidate([-35, 34, 12, -45]) == -35

    # Check some edge cases that are easy to work out by hand.
    assert True

Runs

✅ Run 1

Start time: 2023-07-18 18:19:46
Duration: 15.55s
Completion tokens: 173
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[i-1]:
                return lst[i]
        return None

✅ Run 2

Start time: 2023-07-18 18:19:34
Duration: 12.64s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 3

Start time: 2023-07-18 18:19:17
Duration: 16.99s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 4

Start time: 2023-07-18 18:19:04
Duration: 12.35s
Completion tokens: 161
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    lst = sorted(set(lst))
    if len(lst) < 2:
        return None
    return lst[1]

✅ Run 5

Start time: 2023-07-18 18:18:49
Duration: 14.73s
Completion tokens: 169
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        smallest = lst[0]
        for i in lst:
            if i > smallest:
                return i
        return None

✅ Run 6

Start time: 2023-07-18 18:18:36
Duration: 12.8s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 7

Start time: 2023-07-18 18:18:24
Duration: 12.81s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 8

Start time: 2023-07-18 18:18:08
Duration: 15.28s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 9

Start time: 2023-07-18 18:17:55
Duration: 13.2s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None

✅ Run 10

Start time: 2023-07-18 18:17:36
Duration: 18.48s
Completion tokens: 172
Result: Pass

def next_smallest(lst):
    """
    You are given a list of integers.
    Write a function next_smallest() that returns the 2nd smallest element of the list.
    Return None if there is no such element.
    
    next_smallest([1, 2, 3, 4, 5]) == 2
    next_smallest([5, 1, 4, 3, 2]) == 2
    next_smallest([]) == None
    next_smallest([1, 1]) == None
    """
    if len(lst) < 2:
        return None
    else:
        lst.sort()
        for i in range(1, len(lst)):
            if lst[i] > lst[0]:
                return lst[i]
        return None