Segment Tree is a powerful data structure in programming, that is why it can still be optimized way more. In this blog I will explain one optimization that can make a basic segment tree slightly faster and easie
In bottom-up segment tree, we find the node corresponding to the leftmost element of the query, i.e. $x[l]$, and the node corresponding to the rightmost query element, i.e. $x[r]$. If we numerate nodes in a special way, the leftmost element will correspond to node $N+l$ and ...
Go package that provides implementations of common data structures including a double-ended queue (Deque), a linked list, a queue, a trie, a stack, a priority queue, a binary search tree, a graph, a skip list, a bloom filter, a ring buffer, a disjoint se
The process stops when no more pixels can be chained (i.e. at the limits of the image, with only already visited pixels or weak edge pixels as candidates) or a line edge discontinuity is detected (e.g. the gap between two aligned windows, a tree branch occluding part of a building, ...
LeetCode Video TutorialsA set of videos explaining LeetCode problems. 数据结构与算法/leetcode/lintcode题解 (LeetCode tutorials) (Chinese)Tutorials on popular interview topics. License Awesome Competitive Programming is licensed under aCreative Commons Attribution 4.0 International License. ...
树状数组(也叫Binary Indexed Tree)就是指用数组来表示一棵树,这样空间上更节约。类似的还有binary heap。 那么树怎么放进数组呢?根据维基百科,对于数组里的下标i进行一个特定的位运算,就可以获得其父节点所在的下标。听起来很神奇?刚开始我也不知所云,直到看了Competitive Programming Algorithms的解释: ...
you can start with a+b, simple input and output, and then simple math problems, hash, string, greedy, dynamic programming, search, graph theory, number theory, etc. (tree array, line segment tree, union search, Fast power, game, computational geometry, simulation) one topic, one topic bre...
In research papers, a segment tree refers to a tree data structure allowing retrieving a list of segments which contain the given point. In competitive programming, the name "segment tree" usually refers to a data structure maintaining an array. According tohttp://web.ntnu.edu.tw/~algo/Sequen...
In bottom-up segment tree, we find the node corresponding to the leftmost element of the query, i.e.x[l]x[l], and the node corresponding to the rightmost query element, i.e.x[r]x[r]. If we numerate nodes in a special way, the leftmost element will correspond to nodeN+lN+land ...
The second one is more or less a term only used within competitive programming: a perfectly balanced binary tree where each node maintains the sum (or any other monoid) of its descendant leaves. →Reply Monarcle 13 months ago,#^|