1067 Sort with Swap(0, i) (25 分) Given any permutation of the numbers {0, 1, 2,..., N−1}, it is easy to sort them in increasing order. But what if Swap(0, *) is the ONLY operation that is allowed to use? For example, to sort {4, 0, 2, 1, 3} we may…
1043 Is It a Binary Search Tree (25 分) A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a…
PAT甲级1033. To Fill or Not to Fill 题意: 有了高速公路,从杭州到任何其他城市开车很容易.但由于一辆汽车的坦克容量有限,我们不得不在不时地找到加油站.不同的加油站可能会给不同的价格.您被要求仔细设计最便宜的路线. 输入规格: 每个输入文件包含一个测试用例.对于每种情况,第一行包含4个正数:Cmax(<= 100),坦克的最大容量; D(<= 30000),杭州与目的地城市的距离; Davg(<= 20),汽车可以运行的单位气体的平均距离;和N(<=…