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CCF—GESP Python七级
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单选题
下面程序的运行结果为( )。
def query(n, a, x): left = 0 right = n while left < right: mid = left + (right - left) // 2 if a[mid] >= x: right = mid else: left = mid + left if left == n: return -1 return left if __name__ == "__main__": n = 10 x = 3 num = [1, 2, 2, 3, 3, 4, 5, 5, 6, 7] result = query(n, num, x) print(result)
| A. 2 |
B. 3 |
| C. 4 |
D. 5 |
2026-07-18



