Since there is such an important conclusion, we can safely drop the first k/2 element in A, which are definitaly smaller than k-th element in the union of A and B. This is also true for the A[k/2-1] > B[k/2-1] condition, which we should drop the elements in B. When A[...
另外一个函数签名一样的: set_union 这个会把重复元素除掉,需要注意。 + View Code
1.1 Remove Duplicates from Sorted Array 1.2 Remove Duplicates from Sorted Array II 1.3 Search ...
Each union and find operation is nearly constant time due to path compression and union by rank, making the amortized time complexity very efficient. Space Complexity: O(V), as we need to maintain the parent and rank arrays. The space used is proportional to the number of vertices in the ...
[Array, Hash Table, Union Find]|| |294|Binary Tree Longest Consecutive Sequence.java|Medium|Java|[DFS, Divide and Conquer, Tree]|| |295|Number of Connected Components in an Undirected Graph.java|Medium|Java|[BFS, DFS, Graph, Union Find]|| |296|Next Closest Time.java|Medium|Java|[Basic...
很多人连Segment Tree,BIT,Trie,Union Find这种数据结构都不懂,遇见就刷,自己想,怎么可能想的出来? 所以刷题最重要的,第一步,就是了解所有的数据结构,做题方法,基础算法。从基础数据结构HashMap,HashSet,到TreeSet,TreeMap,Deque,LinkedHashMap;到各种对刷题来说的基础算法,各种排序算法,DFS,BFS,Sliding Window...
3.1 Segment Tree 3.2 UnionFind 3.3 LRUCache 3.4 LFUCache 3.5 Binary Indexed Tree 第四章 LeetCode 题解 0001~0099 0001. Two Sum 0002. Add Two Numbers 0003. Longest Substring Without Repeating Characters 0004. Median of Two Sorted Arrays 0005. Longest Palindromic Substring 0006. Zig Zag Conversio...
std::variant:类型安全的 union std::any:单个值的类型安全容器 LeetCode(力扣) 2015 年,Winston Tang 创办LeetCode,Leet 是一种发源于西方国家的 BBS、在线游戏和黑客社区所使用的文字书写方式,通常是把拉丁字母转变成数字或是特殊符号,例如 E 写成 3、A 写成 @ 等,或是将单字写成同音的字母或数字,如 to ...
543 Diameter of Binary Tree Python Java DFS with O(1) for max answer 547 Friend Circles Python Java 1. DFS, O(n^2) and O(1)2. BFS, O(n^2) and O(1)3. Union-find, O(n^2) and O(n) 557 Reverse Words in a String III Python Java String handle: Split with space than rever...
959 Regions Cut By Slashes ★★★ union find / grid + CCs Search (BFS/DFS)(搜索/回溯)Id Name Difficulty Similar Problems Comments 17 Letter Combinations of a Phone Number ★★ 39 40 77 78 90 216 Combination 46 Permutations ★★ 47 784 943 996 Permutation 22 Generate Parentheses ★★...