| 模型 | 模型答案 | 测试结果 |
|---|---|---|
| 金声玉亮2.0 | ```python def is_undulating(n): if len(n) < 3: return False for i in range(len(n) - 1): if n[i] == n[i + 1]: return False return True ``` [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| deepseekr1 | [BEGIN] def is_undulating(s): if len(s) < 3: return False if s[0] == s[1]: return False for i in range(2, len(s)): if s[i] != s[i-2]: return False return True [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| gpto1 | [BEGIN] 'def is_undulating(num_str): if len(num_str) < 3: return False digits = set(num_str) if len(digits) != 2: return False first_digit = num_str[0] second_digit = num_str[1] if first_digit == second_digit: return False for idx, ch in enumerate(num_str): if idx % 2 == 0: if ch != first_digit: return False else: if ch != second_digit: return False return True' [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| GPT-4o | To determine if a number is undulating, we need to check if it consists of alternating digits. Specifically, an undulating number has at least three digits and alternates between two distinct digits. Here's the function to check if a number is undulating: ```python def is_undulating(number_str): # Convert number string to list of characters (digits) digits = list(number_str) # An undulating number must have at least 3 digits if len(digits) < 3: return False # Extract the first two digits first_digit = digits[0] second_digit = digits[1] # Both digits must be different if first_digit == second_digit: return False # Check the pattern for the rest of the number for i in range(2, len(digits)): if i % 2 == 0 and digits[i] != first_digit: return False if i % 2 == 1 and digits[i] != second_digit: return False return True # Test cases assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` Explanation: 1. Convert the input number string into a list of characters. 2. Check if the length of the number string is at least 3. 3. Extract the first two digits and ensure they are different. 4. Iterate through the remaining digits: - If the index is even, the digit should match the first digit. - If the index is odd, the digit should match the second digit. 5. Return `True` if all conditions are satisfied, otherwise return `False`. |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| llama3.1-70B-Instruct | def is_undulating(num): num = str(num) for i in range(len(num) - 2): if num[i] == num[i+1] or num[i] == num[i+2]: return False return True |
wrong_answer 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| llama3.1-405B-Instruct | def is_undulating(s): if len(s) < 3: return False for i in range(2, len(s)): if s[i] != s[i-2]: return False return True |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| DeepSeek-Coder-V2 | ```python def is_undulating(n): if len(n) < 3: return False for i in range(len(n) - 1): if n[i] == n[i + 1]: return False return True ``` [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| Qwen2-72B-Instruct | 'def is_undulating(num_str): if len(num_str) < 3: return False for i in range(1, len(num_str) - 1): if num_str[i] != num_str[0] or num_str[i] == num_str[i+1]: return False return True' [DONE] Actually, there's a mistake in the function I just wrote. The correct implementation should be: [BEGIN] 'def is_undulating(num_str): if len(num_str) < 3: return False for i in range(1, len(num_str) - 1): if num_str[i] != num_str[i-1] or num_str[i] == num_str[i+1]: return False return True' [DONE] But this is still not right, as it only checks for the condition where the number is not undulating if the current digit is equal to the previous or next digit. An undulating number should have the pattern ABABAB... where A and B are two distinct digits. So the correct implementation should be: [BEGIN] 'def is_undulating(num_str): if len(num_str) < 3: return False a, b = num_str[0], num_str[1] if a == b: return False for i in range(2, len(num_str)): if i % 2 == 0 and num_str[i] != a: return False elif i % 2 != 0 and num_str[i] != b: return False return True' [DONE] |
wrong_answer 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| baichuan4 | To determine if a number is undulating, we need to check if the digits alternate between increasing and decreasing. Here's a Python function that does that: ```python def is_undulating(number): # Convert the number to a string to easily access individual digits digits = str(number) # Check if there are at least 3 digits to form a pattern if len(digits) < 3: return False # Check if the first and last digits are different if digits[0] == digits[-1]: return False # Check if the digits alternate between increasing and decreasing for i in range(len(digits) - 2): if (digits[i] < digits[i + 1] and digits[i + 1] < digits[i + 2]) or \ (digits[i] > digits[i + 1] and digits[i + 1] > digits[i + 2]): return False return True ``` Let's test the function with the provided test cases: ```python assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` The function `is_undulating` correctly identifies undulating numbers by checking if the digits alternate between increasing and decreasing. If the number has less than 3 digits or the first and last digits are the same, it is not considered undulating. The function iterates through the digits and checks if any two consecutive digits violate the undulating pattern. If no violations are found, the number is considered undulating. |
wrong_answer 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| doubao | 'def is_undulating(num_str): for i in range(len(num_str) - 2): if (num_str[i] < num_str[i + 1] and num_str[i + 1] > num_str[i + 2]) or (num_str[i] > num_str[i + 1] and num_str[i + 1] < num_str[i + 2]): continue else: return False return True' [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| minimax | ```python def is_undulating(number): # Convert the input to a string if it's not already num_str = str(number) # An undulating number must have at least 3 digits and be a repetition of two digits if len(num_str) < 3 or len(set(num_str)) != 2: return False # Check if the number is undulating by comparing it with its shifted version return num_str[1:] + num_str[0] == num_str # Test cases assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` This function `is_undulating` takes a number (which can be passed as an integer or a string) and returns `True` if the number is undulating, meaning it consists of a pattern that repeats itself. The pattern must be of two digits repeating, and the number must be at least three digits long. The test cases check for these conditions. |
wrong_answer 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| kimi | Here is the Python function to check whether the given number is undulating or not: ```python def is_undulating(num_str): # Check if the string alternates between increasing and decreasing digits for i in range(len(num_str) - 1): if (int(num_str[i]) < int(num_str[i+1]) and (i == len(num_str) - 2 or int(num_str[i+1]) > int(num_str[i+2])) or (int(num_str[i]) > int(num_str[i+1]) and (i == len(num_str) - 2 or int(num_str[i+1]) < int(num_str[i+2]))): continue else: return False return True # Test cases assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` This function checks each pair of adjacent digits in the string representation of the number to ensure they alternate between increasing and decreasing. If any pair does not follow this pattern, the function returns `False`. If the entire string is checked and the pattern holds, the function returns `True`. |
failed 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| wenxinyiyan | 'def is_undulating(num_str): if len(num_str) < 3: return False prev_diff = int(num_str[1]) - int(num_str[0]) for i in range(2, len(num_str)): curr_diff = int(num_str[i]) - int(num_str[i-1]) if curr_diff == 0 or curr_diff != -prev_diff: return False prev_diff = curr_diff return True' [DONE] Explanation: An undulating number is a number where the difference between consecutive digits alternates between positive and negative. For example, in the number "1212121", the differences between consecutive digits are: 1, -1, 1, -1, 1, -1, which alternate between positive and negative. The function `is_undulating` takes a string representation of a number as input. It first checks if the length of the string is less than 3, as an undulating number must have at least 3 digits. If the length is less than 3, it immediately returns False. Next, it calculates the difference between the first two digits and stores it in the variable `prev_diff`. Then, it iterates over the remaining digits starting from the third digit. For each digit, it calculates the difference between the current digit and the previous digit and stores it in the variable `curr_diff`. If `curr_diff` is zero (indicating that the current digit is the same as the previous digit) or if `curr_diff` is not equal to the negation of `prev_diff` (indicating that the difference does not alternate between positive and negative), the function returns False. If the loop completes without returning False, it means that all the differences between consecutive digits alternate between positive and negative, and the function returns True. Note: The code assumes that the input string contains only digits. If the input string may contain non-digit characters, you may need to add additional input validation or error handling. |
failed 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| zhipu | To create a function that checks whether a given number (represented as a string) is undulating, we need to understand the definition of an undulating number. An undulating number is a number that has the form `ababab...` where `a` and `b` are digits and `a` is not equal to `b`. Here's the function that performs this check: ```python def is_undulating(num_str): # Check if the length of the number is at least 3 if len(num_str) < 3: return False # Get the first two digits a, b = num_str[0], num_str[1] # Check if the first two digits are the same if a == b: return False # Check the pattern for i in range(2, len(num_str)): if (i % 2 == 0 and num_str[i] != a) or (i % 2 == 1 and num_str[i] != b): return False return True # Test cases assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` This function first checks if the length of the input string is at least 3, as a valid undulating number must have at least three digits. It then extracts the first two digits and ensures they are not the same. Finally, it iterates through the rest of the string, checking that the digits alternate between the first and second digit. You can run this code to verify that it passes the provided test cases. |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| gpto1 | [BEGIN] 'def is_undulating(num_str): if len(num_str) < 3: return False digits = set(num_str) if len(digits) != 2: return False first_digit = num_str[0] second_digit = num_str[1] if first_digit == second_digit: return False for idx, ch in enumerate(num_str): if idx % 2 == 0: if ch != first_digit: return False else: if ch != second_digit: return False return True' [DONE] |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |
| deepseekv3 | To determine if a number is undulating, we need to check if the digits alternate between increasing and decreasing in a consistent pattern. An undulating number has at least three digits, and the pattern of alternating digits must be consistent throughout the number. Here’s the Python function to check if a number is undulating: ```python def is_undulating(n): # Convert the input to a string to easily access individual digits s = str(n) # An undulating number must have at least three digits if len(s) < 3: return False # Check if the digits alternate consistently for i in range(1, len(s)): if i % 2 == 1: # For odd positions, the digit should be different from the previous one if s[i] == s[i-1]: return False else: # For even positions, the digit should be the same as the one two positions back if s[i] != s[i-2]: return False return True # Test cases assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True ``` ### Explanation: 1. **Input Handling**: The function takes the input as a string to easily access individual digits. 2. **Length Check**: An undulating number must have at least three digits, so we return `False` if the length is less than 3. 3. **Pattern Check**: - For odd positions (1, 3, 5, ...), the digit should be different from the previous one. - For even positions (2, 4, 6, ...), the digit should be the same as the one two positions back. 4. **Return Result**: If all checks pass, the number is undulating, so we return `True`. This function should correctly identify undulating numbers based on the given test cases. |
pass 测试用例:assert is_undulating("1212121") == True assert is_undulating("1991") == False assert is_undulating("121") == True |