测试评估
| 指标 | 结果 |
|---|---|
| Base 测试 | PASS |
| Plus 测试 | PASS |
| 代码长度 | 509 字符 |
模型生成的代码 （509 字符）
def even_binomial_Coeff_Sum(n: int) -> int:
"""
Returns the sum of the binomial coefficients C(n, k) for all even k,
where n is a positive integer.
The sum of even-indexed binomial coefficients for n > 0 is 2^(n-1),
because (1+1)^n + (1-1)^n = 2 * sum_{k even} C(n, k).
Args:
n: A positive integer.
Returns:
The sum of the even-indexed binomial coefficients.
"""
if n <= 0:
raise ValueError("n must be a positive integer")
return 2 ** (n - 1)Base 失败测试用例
- 无失败测试
Plus 失败测试用例
- 无失败测试