试卷总分:100分
选择题 15题 75分
判断题 5题 25分
运行以下程序,输出结果是( )
goods = [180, 220, 150, 200, 170] goods.sort() print(goods[2])
驼队每日行程数据已排好序,用二分查找检索某日行程,运行以下程序,输出结果是( )
def search(x): miles = [35, 40, 45, 50, 55] left, right = 0, 4 while left <= right: mid = (left + right) // 2 if miles[mid] == x: return mid elif miles[mid] < x: left = mid + 1 else: right = mid - 1 return -1 print(search(45))
丝绸织造中计算纹样排列方式数,运行递归函数,输出是( )
def pattern(n): if n < 2: return 1 return n * pattern(n-1) print(pattern(5))
统计两批货物的总价值(每类货物数量×单件价值),运行以下双重循环,sum 的值是( )
sum = 0 for i in range(1, 4): # 3类商品 for j in range(1, i+1): # 每类购进j批 sum += i * j print(sum)
以下程序存储了丝路城市的简介,运行后输出结果是( )
cities = [{"name":"敦煌", "relics":735}, {"name":"喀什", "relics":420}] print(cities[0]["relics"] + cities[1]["relics"])
统计丝路商队中满足载重限制的情况次数,运行下面代码,cnt 的值是( )
cnt = 0 for i in range(2, 5): for j in range(1, 4): if i * j > 5: cnt += 1 print(cnt)
在丝路贸易数据中,用二分查找定位某个销量值,运行如下代码,输出结果是( )
sales = [100, 200, 300, 400, 500, 600] left, right = 0, 5 while left < right: mid = (left + right + 1) // 2 if sales[mid] <= 400: left = mid else: right = mid - 1 print(left)
某丝路遗址的文物评分矩阵如下,程序输出对角线元素之和,结果是( )
grid = [[9, 2, 4], [3, 8, 5], [6, 1, 7]] total = 0 for i in range(3): for j in range(3): if i == j: total += grid[i][j] print(total)
运行嵌套函数,输出是( )
def larger(a, b): return a if a > b else b print(larger(larger(25, 18), 22))
以下是丝路商品价格的冒泡排序程序,排序后输出 price[3],结果是( )
price = [88, 45, 67, 32, 56] for i in range(len(price)-1): for j in range(len(price)-1-i): if price[j] > price[j+1]: price[j], price[j+1] = price[j+1], price[j] print(price[3])