This repository contains the solutions and explanations to the algorithm problems on LeetCode. Only medium or above are included. All are written in C++/Python and implemented by myself. The problems attempted multiple times are labelled with hyperlinks.
The traditional algorithms based on Dijkstra's algorithm couldn't solve the shortest path problems on time-dependent networks with LIFO arcs. In this paper, a topological ordering time-dependent shortest-path algorithm is presented to solve this kind of problems efficiently. Depth-first-search is ...
6. Binary Search Graph Algorithms: 1. DFS 2. BFS 3. Finding Cycle 4. Checking if graph is bipartite 5. Dijkstra's algorithm 6. Floyd-Marshall's algorithm 7. Checking connectivity 8. Kruskal’s Minimum Spanning Tree Algorithm 9. Finding if there is a path between two vertices Dynamic Prog...
Algorithm 给定一个输入图,算法首先计算它的线图(对于要选择边的问题),节点或边的权重作为输入到GNN的特征。算法首先使用GAT编码器创建输入的dense representation。然后算法循环迭代 n 次,使用解码器选择要添加的原始节点或边作为动作。损失是使用奖励的策略梯度计算的。 Results 图3显示该方法在图节点的数量上有线性...
Heaps are particularly useful for problems that require frequent access to the largest or smallest elements, such as finding the top K elements or implementing Dijkstra's algorithm for shortest paths. Sample Problem **Problem:**703. Kth Largest Element in a StreamDesign a class to find the kth...
2. Which algorithm is commonly used to solve the maximum flow problem? A. Dijkstra's Algorithm B. Kruskal's Algorithm C. Ford-Fulkerson Algorithm D. Prim's Algorithm Show Answer Advertisement - This is a modal window. No compatible source was found for this media. 3. In network ...
one path between x and y.6.Suppose you have a weighted,undirected tree.Show that if you run Di-jkstra’s algorithm on this tree starting from the root,then at each iteration, the known region also consists of a tree.What if you run Dijkstra’s algorithm from a different node?1 ...
In final dijkstra, a node is an articulation point, if after poping it from the queue, there is no other node in the queue kattis - kingpinescape Graph - Articulation Points/Bridges c++ Complicated matching of leaves. One has to think a lot on how to connect the leaves in order to ...
Quiz sounds like something that can contain questions, because you can answer them. There can exist even algorithmic questions like “what’s the complexity of Dijkstra algorithm?” but problems request something like “write a code which solves this problem”. There is even a difference between ...
In particular, we show that the short paths node-wise interdiction problem can be efficiently solved by an extension of Dijkstra’s algorithm. In contrast, the short paths total interdiction problem is known to be NP-hard. We strengthen this hardness result by deriving the following inapproxim...