sun%moon

题目链接8 puzzle题意简介拼图游戏，该拼图板是一个n*n的方格，但是只放了n*n-1个卡片，有一个空卡片便于我们移动，要求最后把拼图按照从上到下从左到右的顺序放卡片(1~n*n-1)，求最少的步数。题目解析1、使用A*搜索算法，其实就是BFS的变体，每次选择优先级最高的节点出队列。我们直接使用老师提供的MinPQ数据结构即可。2、剪枝。代码中设计了一个数据结构，一个私有类——No...

完整代码如下Deque.javaimport java.util.Iterator;import java.util.NoSuchElementException;public class Deque<Item> implements Iterable<Item> { private Node first, last; private int N; ...

Social network connectivity. Given a social network containing nn members and a log file containing mm timestamps at which times pairs of members formed friendships, design an algorithm to determine ...

Java generics. Explain why Java prohibits generic array creation.to start, you need to understand that Java arrays are covariant but Java generics are not: that is, String[] is a subtype of Object[], b

Stack with max. Create a data structure that efficiently supports the stack operations (push and pop) and also a return-the-maximum operation. Assume the elements are reals numbers so that you can comp