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89860 篇文章 33 次评论单选题:一棵二叉树的先序遍历序列为ABCDEF,中序遍历序列为CBAEDF,则后序遍历序列为( )
一棵二叉树的先序遍历序列为ABCDEF,中序遍历序列为CBAEDF,则后序遍历序列为( )A.CBEFDAB.FEDCBAC.CBEDFAD.不确定答案:A…
单选题:We can tell that there must be a lot of redundant calculations d
We can tell that there must be a lot of redundant calculations during the exhaustive search for the matrix multiplicatio…
单选题:Why doesn't Floyd algorithm work if there are negative-cost cycl
Why doesn't Floyd algorithm work if there are negative-cost cycles?A.Because Floyd didn't like negative numbers.B.Becaus…
单选题:如下程序段的输出结果是( )。
如下程序段的输出结果是( )。```def fun(): x = 20 print(x, end=' ')x = 10fun()print(x)```A.10 20B.20 10C.10 10D.20 20答案:B…
单选题:如下程序段的输出结果是( )。
如下程序段的输出结果是( )。```def fun(x, *y): print(y)fun(10, 20, 30)```A.20B.30C.(20, 30)D.语法错误答案:C…
单选题:下面哪组是全部合法的标识符?
下面哪组是全部合法的标识符?A.```average2youtom&jerry```B.```f(x)a+b_sum```C.```andsub_x_money1```D.```'a'dollar$mycup```答案:C…
单选题:设有定义:
设有定义:int x;double y=15.8;执行表达式x=(int)(y/3+0.5)+(int)y%3之后,x的值等于()。A.5B.5.0C.5.3D.5.8答案:A…