he-019

# HumanEval/19

Implement a file **`solution.py`** that completes the function below. Keep the given name and signature; your file must define it at module level.

```python
from typing import List


def sort_numbers(numbers: str) -> str:
    """ Input is a space-delimited string of numberals from 'zero' to 'nine'.
    Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
    Return the string with numbers sorted from smallest to largest
    >>> sort_numbers('three one five')
    'one three five'
    """
```

<!-- imported from OpenAI HumanEval (HumanEval/19) -->

# Auto-generated from OpenAI HumanEval HumanEval/19. Do not edit by hand.
from solution import *  # noqa: F401,F403 (prompt helpers may be referenced by tests)
from solution import sort_numbers as candidate

METADATA = {
    'author': 'jt',
    'dataset': 'test'
}


def check(candidate):
    assert candidate('') == ''
    assert candidate('three') == 'three'
    assert candidate('three five nine') == 'three five nine'
    assert candidate('five zero four seven nine eight') == 'zero four five seven eight nine'
    assert candidate('six five four three two one zero') == 'zero one two three four five six'


def test_he_019():
    check(candidate)

You are an expert programmer. Solve the task exactly as specified. Output your solution as fenced code blocks using the required file name(s) and the exact function/type signatures requested. Prefer correctness; do not include prose outside code unless asked.

```python
from typing import List

def sort_numbers(numbers: str) -> str:
    """ Input is a space-delimited string of numberals from 'zero' to 'nine'.
    Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
    Return the string with numbers sorted from smallest to largest
    >>> sort_numbers('three one five')
    'one three five'
    """
    word_to_num = {
        'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4,
        'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9
    }
    return ' '.join(sorted(numbers.split(), key=lambda w: word_to_num[w]))
```

The user wants a Python function `sort_numbers` that takes a space-delimited string of number words (from 'zero' to 'nine') and returns a space-delimited string of those number words sorted by their numeric value from smallest to largest.

Input: `numbers: str` - space-delimited string of number words.
Output: `str` - space-delimited string of sorted number words.

Example: `sort_numbers('three one five')` -> `'one three five'`

Steps:
1. Split the input string by spaces to get a list of words.
2. Map each word to its corresponding integer value.
3. Sort the words based on their integer values.
4. Join the sorted words back into a space-delimited string.
5. Return the result.

Mapping:
'zero' -> 0
'one' -> 1
'two' -> 2
'three' -> 3
'four' -> 4
'five' -> 5
'six' -> 6
'seven' -> 7
'eight' -> 8
'nine' -> 9

Implementation details:
Create a dictionary or list for mapping.
`word_to_num = {'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4, 'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9}`
Split input: `words = numbers.split()`
Sort: `sorted_words = sorted(words, key=lambda w: word_to_num[w])`
Join: `return ' '.join(sorted_words)`

Edge cases:
- Empty string? The problem says "Input is a space-delimited string of numberals...", usually implies non-empty, but `split()` on empty string returns `[]`, `sorted` returns `[]`, `join` returns `''`. That's fine.
- Multiple spaces? `split()` without arguments handles multiple spaces correctly.
- Case sensitivity? The problem uses lowercase. We'll assume lowercase as per example.

Let's write out the code.

```python
from typing import List

def sort_numbers(numbers: str) -> str:
    word_to_num = {
        'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4,
        'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9
    }
    words = numbers.split()
    sorted_words = sorted(words, key=lambda w: word_to_num[w])
    return ' '.join(sorted_words)
```

Check constraints and types:
The function signature matches.
The docstring is preserved.
It handles the example correctly.
`sort_numbers('three one five')` -> `words = ['three', 'one', 'five']` -> `sorted` -> `['one', 'three', 'five']` -> `'one three five'`. Correct.

One minor point: `from typing import List` is in the prompt but not strictly needed for this function, but I'll keep it as requested or just include it. The prompt says "Keep the given name and signature; your file must define it at module level."

I will produce the exact code block.

Wait, should I handle potential invalid inputs? The problem says "Valid choices are ...", so we can assume valid input.

Let's double check the exact prompt:
```python
from typing import List


def sort_numbers(numbers: str) -> str:
    """ Input is a space-delimited string of numberals from 'zero' to 'nine'.
    Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
    Return the string with numbers sorted from smallest to largest
    >>> sort_numbers('three one five')
    'one three five'
    """
```

I'll just implement it directly.

One thing: `List` is imported but unused. That's fine, I'll leave it as is or remove it, but usually it's better to keep imports if provided. I'll just provide the function.

Code structure:
```python
from typing import List

def sort_numbers(numbers: str) -> str:
    word_to_num = {
        'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4,
        'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9
    }
    return ' '.join(sorted(numbers.split(), key=lambda x: word_to_num[x]))
```

This is concise and correct.
I will wrap it in the requested format.
Check if any edge cases like empty string: `numbers.split()` on `""` gives `[]`, `sorted` gives `[]`, `join` gives `""`. Correct.
Check if `numbers` has trailing/leading spaces: `split()` handles it.
All good.
I will produce the solution. 
One minor consideration: sometimes these problems expect the exact signature and docstring. I'll include them.
Ready. 
Output matches requirements.
Proceeds. 
Self-Correction/Verification during thought:
Is there any chance `numbers` contains duplicates? Yes, `sorted` handles duplicates correctly.
Is there any chance the input string is empty? Handled.
The mapping dictionary is correct.
The code is robust.
I will generate the response. 
All steps verified.
Output matches exactly.
Done. 
Generating response. 
```python
from typing import List

def sort_numbers(numbers: str) -> str:
    """ Input is a space-delimited string of numberals from 'zero' to 'nine'.
    Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
    Return the string with numbers sorted from smallest to largest
    >>> sort_numbers('three one five')
    'one three five'
    """
    word_to_num = {
        'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4,
        'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9
    }
    return ' '.join(sorted(numbers.split(), key=lambda w: word_to_num[w]))
```
Looks good. I'll output this. 
Note: The prompt includes `from typing import List` at the top, I will include it to be safe, though it's not strictly used. It's fine.
Final check of the prompt: "Implement a file **`solution.py`** that completes the function below."
I will provide the full code.
Done. 
Proceeds. 
[Output Generation] -> matches the code block. 
All good. 
(Self-Correction/Refinement during thought)
Wait, should I consider that `numbers.split()` might fail if `numbers` is empty? No, `"".split()` returns `[]`.
What about `numbers` being `None`? Type hint says `str`, so assume valid string.
The solution is solid.
I will produce it now. 
Output matches exactly. 
Done. 
[Final Check]
Function name: `sort_numbers`
Signature: `(numbers: str) -> str`
Docstring: preserved
Logic: correct
Imports: preserved
Ready. 
Output Generation. 
```python
from typing import List

def sort_numbers(numbers: str) -> str:
    """ Input is a space-delimited string of numberals from 'zero' to 'nine'.
    Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
    Return the string with numbers sorted from smallest to largest
    >>> sort_numbers('three one five')
    'one three five'
    """
    word_to_num = {
        'zero': 0, 'one': 1, 'two': 2, 'three': 3, 'four': 4,
        'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9
    }
    return ' '.join(sorted(numbers.split(), key=lambda w: word_to_num[w]))
```
Matches request. Done. 
Proceeds. 
[Output Generation] (matches the final block)
All steps verified. No extra fluff. Correct. 
Done. 
[Final Output Generation] -> *Proceeds*