In this paper, we present efficient parallel algorithms for breadth-first and depth-first search of graphs, finding the transitive closure of a directed graph, topological sorting of the nodes of a directed acy
DLINEAR and NLINEAR, of problems computable in deterministic (resp. nondeterministic) linear time are robust and powerful. In particular DLINEAR includes most of the concrete problems commonly regarded as computable in linear time (such as graph...
Efficiently handling intervals often involves sorting the intervals based on their starting points, allowing for linear scans to process them. Sample Problem **Problem:**56. Merge IntervalsGiven an array of intervals whereintervals[i] = [starti, endi], merge all overlapping intervals, and return ...
65 Transitive Closure on Candy States 382 9.69 377 Sum of Digits Divisibility 81 12.37 117 Divide by Two 329 9.95 99 Uphill Shooting 344 9.87 452 Implication in Logic 8 16.20 144 Modular Inverse 282 10.21 155 Depth First Search 269 10.30 161 Topological Sorting 262 10.34 174 Calculation of Pi...
289 Topological Sorting.java Medium Java 290 Total Occurrence of Target.java Java 291 Trailing Zeros.java Java 292 Trapping Rain Water II.java Hard Java 293 Trapping Rain Water.java Medium Java 294 Triangle Count.java Java 295 Tweaked Identical Binary Tree.java Easy Java 296 Two Lists...
Topological Sorting.java Medium [BFS, DFS, Lint, Topological Sort] O(V + E) O(V + E) Java 301 36 36. Valid Sudoku.java Easy [Enumeration, Hash Table] (mn) (mn) Java 302 359 359. Logger Rate Limiter.java Easy [Design, Hash Table] O(1) O(n) Java 303 198 198. House Robber...
we have proposed a new fast and memory efficient algorithm called Big-MLCS for large-scale MLCS problems. By deleting points in Hash Table timely during the search process and application of new data structures, we have reduced the time cost by avoiding the topological sorting in Top-MLCS, and...
DFS can be used for various tasks such as finding paths between vertices, determining graph connectivity, topological sorting, and others. Let’s check the problem:https://leetcode.com/problems/keys-and-rooms/. We realized that we can solve this using a graph and DFS, but how? Instead of...
On the other hand, there are A LOT of linear or quasi-linear algorithms. - Most basic graph stuff: DFS (+bridges+articulation_points+topological_sort+SCC+euler_tour), BFS, Dijkstra, Kruskal - A lot of things on trees can be done inO(logp)O(logp)after precalc in quasi-linear time: ...
kattis - trainsorting DP - LIS c++ You can put the car on the front -> increasing subsequence order (LIS), or you can put it to the back -> decreasing subsequence order (LDS). Restriciton: All elements from LDS need to be lower than all elements in LIS. Solution: Let w* be the...