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package core.solver;
import core.problem.Problem;
import java.util.ArrayDeque;
import java.util.Deque;
public interface Searcher {
/**
* @problem 要解决的问题
* @return 当前问题的解路径。如果没有解，则返回null
*/
Deque<Node> search(Problem problem);
* 默认实现，从目标结点，反向回溯得到一条路径
* @param node 目标结点
* @return 倒推生成的从根结点到目标结点的路径，栈底是目标结点，栈顶是根结点
default Deque<Node> generatePath(Node node) {
Deque<Node> stack = new ArrayDeque<>();
while (node.getParent() != null) {
stack.push(node);
node = node.getParent();
}
return stack;
