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.
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 inapproximability bounds: Given k, it is NP-hard to ...
Agreedy algorithmis an algorithmic paradigm that follows the problem-solving heuristic of making the locally optimal choice at each stage with the hope of finding a global optimum. Following are commonly asked greedy algorithm problems in technical interviews: Activity Selection Problem Given a set of...
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...
Vygen, A generalization of Dijkstra’s shortest path algorithm with applications to VLSI routing. Report No. 06964-OR, Research Institute for Discrete Mathematics, University of Bonn (2006). Google Scholar S. A. Plotkin, D. B. Shmoys and É. Tardos, Fast approximation algorithms for ...
of Dijkstra’s brilliant work on self-stabilization to be one of my greatest contributions to computer science. The paper contains one figure–copied directly from a transparency–with an obviously bogus algorithm. I tried to recreate an algorithm from memory and wrote complete nonsense. ...
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 ...
While Dijkstra Shortest Path algorithm helps find shortest path between start and end vertex, [FloydWarshallAlgorithm] finds the shortest path between all vertices in a [graph] Source PrimMinSpanningTreeAlgorithm Kotlin • algorithmsinanutshell Prim Algorithm starts from min cost edge and then selec...
Uniform-Cost Search (aka Dijkstra's algorithm) 步长成本相等的情况: 当每一步的成本(路径代价)相等时,广度优先搜索(Breadth-First Search, BFS)是最优的,因为它总是优先扩展最浅的节点。 这是因为在所有路径代价都相等的情况下,路径的深度与总代价成正比,最浅的路径即为最优路径。
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 ...