然后用char[]来count chars from A. 再对照chars in B. 39.Complete Binary Tree.javaLevel: Easy BFS Use a flag . 当出现了第一次有 null children的node的时候, 说明complete tree的最低level出现了。 自此以后,queue再不该有node再有child, queue后面出现的node的左右孩子应该都是null. 40.Construct Bin...
178 Count Complete Tree Nodes.java Medium Java [Binary Search, Tree] 179 Course Schedule.java Medium Java [BFS, Backtracking, DFS, Graph, Topological Sort] 180 Course Schedule II.java Medium Java [BFS, DFS, Graph, Topological Sort] 181 Binary Tree Preorder Traversal.java Easy Java [BFS...
Complete Recoverable Cascadeless Strict What is Conflict Operation? How to find wether Schedules are conflicting or not Concurrency Control Purpose? Shared Lock Exclusive Lock 2-Phase Locking PRotocal (important) Deadlock What is Deadlock? Examples? Deadlock Detection How to prevent Deadlock (...
然后用char[]来count chars from A. 再对照chars in B. 39.Complete Binary Tree.javaLevel: Easy BFS Use a flag . 当出现了第一次有 null children的node的时候, 说明complete tree的最低level出现了。 自此以后,queue再不该有node再有child, queue后面出现的node的左右孩子应该都是null. 40.Construct Bin...
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This problem is equivalent to finding the topological order in a directed graph. If a cycle exists, no topological ordering exists and therefore it will be impossible to take all courses. Topological Sort via DFS - A great video tutorial (21 minutes) on Coursera explaining the basic concepts ...
178 Count Complete Tree Nodes.java Medium Java [Binary Search, Tree] 179 Course Schedule.java Medium Java [BFS, Backtracking, DFS, Graph, Topological Sort] 180 Course Schedule II.java Medium Java [BFS, DFS, Graph, Topological Sort] 181 Binary Tree Preorder Traversal.java Easy Java [BFS...
180 Course Schedule II.java Medium Java [BFS, DFS, Graph, Topological Sort] 181 Binary Tree Preorder Traversal.java Easy Java [BFS, DFS, Stack, Tree] 182 Closest Number in Sorted Array.java Easy Java [Binary Search] 183 Complete Binary Tree.java Easy Java [BFS, Tree] 184 Compare...
180 Course Schedule II.java Medium Java [BFS, DFS, Graph, Topological Sort] 181 Binary Tree Preorder Traversal.java Easy Java [BFS, DFS, Stack, Tree] 182 Closest Number in Sorted Array.java Easy Java [Binary Search] 183 Complete Binary Tree.java Easy Java [BFS, Tree] 184 Compare...
178 Count Complete Tree Nodes.java Medium Java [Binary Search, Tree] 179 Course Schedule.java Medium Java [BFS, Backtracking, DFS, Graph, Topological Sort] 180 Course Schedule II.java Medium Java [BFS, DFS, Graph, Topological Sort] 181 Binary Tree Preorder Traversal.java Easy Java [BFS...