leetcode.com 2026-07-10
🔴3534.path-existence-queries-in-a-graph-ii
🏷️ Tags
#greedy #bit_manipulation #graph #array #two_pointers #binary_search #dynamic_programming #sorting
🔴3534.path-existence-queries-in-a-graph-ii
🏷️ Tags
#greedy #bit_manipulation #graph #array #two_pointers #binary_search #dynamic_programming #sorting
Telegraph
path-existence-queries-in-a-graph-ii
You are given an integer n representing the number of nodes in a graph, labeled from 0 to n - 1. You are also given an integer array nums of length n and an integer maxDiff. An undirected edge exists between nodes i and j if the absolute difference between…
leetcode.cn 2026-07-11
🟡2685.count-the-number-of-complete-components
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #graph
🟡2685.count-the-number-of-complete-components
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #graph
Telegraph
count-the-number-of-complete-components
给你一个整数 n 。现有一个包含 n 个顶点的 无向 图,顶点按从 0 到 n - 1 编号。给你一个二维整数数组 edges 其中 edges[i] = [ai, bi] 表示顶点 ai 和 bi 之间存在一条 无向 边。 返回图中 完全连通分量 的数量。 如果在子图中任意两个顶点之间都存在路径,并且子图中没有任何一个顶点与子图外部的顶点共享边,则称其为 连通分量 。 如果连通分量中每对节点之间都存在一条边,则称其为 完全连通分量 。 示例 1: 输入:n = 6, edges = [[0,1],[0…
leetcode.com 2026-07-11
🟡2685.count-the-number-of-complete-components
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #graph
🟡2685.count-the-number-of-complete-components
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #graph
Telegraph
count-the-number-of-complete-components
You are given an integer n. There is an undirected graph with n vertices, numbered from 0 to n - 1. You are given a 2D integer array edges where edges[i] = [ai, bi] denotes that there exists an undirected edge connecting vertices ai and bi. Return the number…
leetcode.cn 2026-07-14
🔴3336.find-the-number-of-subsequences-with-equal-gcd
🏷️ Tags
#array #math #dynamic_programming #number_theory
🔴3336.find-the-number-of-subsequences-with-equal-gcd
🏷️ Tags
#array #math #dynamic_programming #number_theory
Telegraph
find-the-number-of-subsequences-with-equal-gcd
给你一个整数数组 nums。 请你统计所有满足以下条件的 非空 子序列 对 (seq1, seq2) 的数量:
leetcode.com 2026-07-14
🔴3336.find-the-number-of-subsequences-with-equal-gcd
🏷️ Tags
#array #math #dynamic_programming #number_theory
🔴3336.find-the-number-of-subsequences-with-equal-gcd
🏷️ Tags
#array #math #dynamic_programming #number_theory
Telegraph
find-the-number-of-subsequences-with-equal-gcd
You are given an integer array nums. Your task is to find the number of pairs of non-empty subsequences (seq1, seq2) of nums that satisfy the following conditions:
leetcode.cn 2026-07-16
🟡3867.sum-of-gcd-of-formed-pairs
🏷️ Tags
#array #math #two_pointers #number_theory #sorting #simulation
🟡3867.sum-of-gcd-of-formed-pairs
🏷️ Tags
#array #math #two_pointers #number_theory #sorting #simulation
Telegraph
sum-of-gcd-of-formed-pairs
给你一个长度为 n 的整数数组 nums。
leetcode.com 2026-07-16
🟡3867.sum-of-gcd-of-formed-pairs
🏷️ Tags
#array #math #two_pointers #number_theory #sorting #simulation
🟡3867.sum-of-gcd-of-formed-pairs
🏷️ Tags
#array #math #two_pointers #number_theory #sorting #simulation
Telegraph
sum-of-gcd-of-formed-pairs
You are given an integer array nums of length n. Construct an array prefixGcd where for each index i:
leetcode.cn 2026-07-17
🔴3312.sorted-gcd-pair-queries
🏷️ Tags
#array #hash_table #math #binary_search #combinatorics #counting #number_theory #prefix_sum
🔴3312.sorted-gcd-pair-queries
🏷️ Tags
#array #hash_table #math #binary_search #combinatorics #counting #number_theory #prefix_sum
Telegraph
sorted-gcd-pair-queries
给你一个长度为 n 的整数数组 nums 和一个整数数组 queries 。 gcdPairs 表示数组 nums 中所有满足 0 <= i < j < n 的数对 (nums[i], nums[j]) 的 最大公约数 升序 排列构成的数组。 对于每个查询 queries[i] ,你需要找到 gcdPairs 中下标为 queries[i] 的元素。
leetcode.com 2026-07-17
🔴3312.sorted-gcd-pair-queries
🏷️ Tags
#array #hash_table #math #binary_search #combinatorics #counting #number_theory #prefix_sum
🔴3312.sorted-gcd-pair-queries
🏷️ Tags
#array #hash_table #math #binary_search #combinatorics #counting #number_theory #prefix_sum
Telegraph
sorted-gcd-pair-queries
You are given an integer array nums of length n and an integer array queries. Let gcdPairs denote an array obtained by calculating the GCD of all possible pairs (nums[i], nums[j]), where 0 <= i < j < n, and then sorting these values in ascending order. For…
leetcode.com 2026-07-18
🟢1979.find-greatest-common-divisor-of-array
🏷️ Tags
#array #math #number_theory
🟢1979.find-greatest-common-divisor-of-array
🏷️ Tags
#array #math #number_theory
Telegraph
find-greatest-common-divisor-of-array
Given an integer array nums, return the greatest common divisor of the smallest number and largest number in nums. The greatest common divisor of two numbers is the largest positive integer that evenly divides both numbers. Example 1: Input: nums = [2,5…
leetcode.cn 2026-07-19
🟡1081.smallest-subsequence-of-distinct-characters
🏷️ Tags
#stack #greedy #string #monotonic_stack
🟡1081.smallest-subsequence-of-distinct-characters
🏷️ Tags
#stack #greedy #string #monotonic_stack
Telegraph
smallest-subsequence-of-distinct-characters
返回 s 字典序最小的子序列,该子序列包含 s 的所有不同字符,且只包含一次。 示例 1: 输入:s = "bcabc" 输出:"abc" 示例 2: 输入:s = "cbacdcbc" 输出:"acdb" 提示:
leetcode.com 2026-07-19
🟡1081.smallest-subsequence-of-distinct-characters
🏷️ Tags
#stack #greedy #string #monotonic_stack
🟡1081.smallest-subsequence-of-distinct-characters
🏷️ Tags
#stack #greedy #string #monotonic_stack
Telegraph
smallest-subsequence-of-distinct-characters
Given a string s, return the lexicographically smallest subsequence of s that contains all the distinct characters of s exactly once. Example 1: Input: s = "bcabc" Output: "abc" Example 2: Input: s = "cbacdcbc" Output: "acdb" Constraints: