leetcode.cn 2026-07-09
🟡3532.path-existence-queries-in-a-graph-i
🏷️ Tags
#union_find #graph #array #hash_table #binary_search
🟡3532.path-existence-queries-in-a-graph-i
🏷️ Tags
#union_find #graph #array #hash_table #binary_search
Telegraph
path-existence-queries-in-a-graph-i
给你一个整数 n,表示图中的节点数量,这些节点按从 0 到 n - 1 编号。 同时给你一个长度为 n 的整数数组 nums,该数组按 非递减 顺序排序,以及一个整数 maxDiff。 如果满足 |nums[i] - nums[j]| <= maxDiff(即 nums[i] 和 nums[j] 的 绝对差 至多为 maxDiff),则节点 i 和节点 j 之间存在一条 无向边 。 此外,给你一个二维整数数组 queries。对于每个 queries[i] = [ui, vi],需要判断节点 ui 和 vi…
leetcode.com 2026-07-09
🟡3532.path-existence-queries-in-a-graph-i
🏷️ Tags
#union_find #graph #array #hash_table #binary_search
🟡3532.path-existence-queries-in-a-graph-i
🏷️ Tags
#union_find #graph #array #hash_table #binary_search
Telegraph
path-existence-queries-in-a-graph-i
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 sorted in non-decreasing order, and an integer maxDiff. An undirected edge exists between nodes i and j if…
leetcode.cn 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
给你一个整数 n,表示图中的节点数量,这些节点按从 0 到 n - 1 编号。 同时给你一个长度为 n 的整数数组 nums,以及一个整数 maxDiff。 如果满足 |nums[i] - nums[j]| <= maxDiff(即 nums[i] 和 nums[j] 的 绝对差 至多为 maxDiff),则节点 i 和节点 j 之间存在一条 无向边 。 此外,给你一个二维整数数组 queries。对于每个 queries[i] = [ui, vi],找到节点 ui 和节点 vi 之间的 最短距离 。如果两节点之间不存在路径,则返回…
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 2026-07-17
🔴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.cn 2026-07-22
🔴3501.maximize-active-section-with-trade-ii
🏷️ Tags
#segment_tree #array #string #binary_search
🔴3501.maximize-active-section-with-trade-ii
🏷️ Tags
#segment_tree #array #string #binary_search
Telegraph
maximize-active-section-with-trade-ii
给你一个长度为 n 的二进制字符串 s ,其中:
leetcode.com 2026-07-22
🔴3501.maximize-active-section-with-trade-ii
🏷️ Tags
#segment_tree #array #string #binary_search
🔴3501.maximize-active-section-with-trade-ii
🏷️ Tags
#segment_tree #array #string #binary_search
Telegraph
maximize-active-section-with-trade-ii
You are given a binary string s of length n, where:
leetcode.cn 2026-08-21
🔴3116.kth-smallest-amount-with-single-denomination-combination
🏷️ Tags
#bit_manipulation #array #math #binary_search #combinatorics #number_theory
🔴3116.kth-smallest-amount-with-single-denomination-combination
🏷️ Tags
#bit_manipulation #array #math #binary_search #combinatorics #number_theory
Telegraph
kth-smallest-amount-with-single-denomination-combination
给你一个整数数组 coins 表示不同面额的硬币,另给你一个整数 k 。 你有无限量的每种面额的硬币。但是,你 不能 组合使用不同面额的硬币。 返回使用这些硬币能制造的 第 kth 小 金额。 示例 1: 输入: coins = [3,6,9], k = 3 输出: 9 解释:给定的硬币可以制造以下金额:3元硬币产生3的倍数:3, 6, 9, 12, 15等。6元硬币产生6的倍数:6, 12, 18, 24等。9元硬币产生9的倍数:9, 18, 27, 36等。所有硬币合起来可以产生:3, 6, 9…
leetcode.com 2026-08-21
🔴3116.kth-smallest-amount-with-single-denomination-combination
🏷️ Tags
#bit_manipulation #array #math #binary_search #combinatorics #number_theory
🔴3116.kth-smallest-amount-with-single-denomination-combination
🏷️ Tags
#bit_manipulation #array #math #binary_search #combinatorics #number_theory
Telegraph
kth-smallest-amount-with-single-denomination-combination
You are given an integer array coins representing coins of different denominations and an integer k. You have an infinite number of coins of each denomination. However, you are not allowed to combine coins of different denominations. Return the kth smallest…
leetcode.cn 2026-09-12
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
Telegraph
maximum-score-of-non-overlapping-intervals
给你一个二维整数数组 intervals,其中 intervals[i] = [li, ri, weighti]。区间 i 的起点为 li,终点为 ri,权重为 weighti。你最多可以选择 4 个互不重叠 的区间。所选择区间的 得分 定义为这些区间权重的总和。 返回一个至多包含 4 个下标且 字典序最小 的数组,表示从 intervals 中选中的互不重叠且得分最大的区间。
leetcode.com 2026-09-12
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
Telegraph
maximum-score-of-non-overlapping-intervals
You are given a 2D integer array intervals, where intervals[i] = [li, ri, weighti]. Interval i starts at position li and ends at ri, and has a weight of weighti. You can choose up to 4 non-overlapping intervals. The score of the chosen intervals is defined…
leetcode.cn 2026-09-17
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
Telegraph
find-two-non-overlapping-sub-arrays-each-with-target-sum
给你一个整数数组 arr 和一个整数值 target 。 请你在 arr 中找 两个互不重叠的子数组 且它们的和都等于 target 。可能会有多种方案,请你返回满足要求的两个子数组长度和的 最小值 。 请返回满足要求的最小长度和,如果无法找到这样的两个子数组,请返回 -1 。 示例 1: 输入:arr = [3,2,2,4,3], target = 3 输出:2 解释:只有两个子数组和为 3 ([3] 和 [3])。它们的长度和为 2 。 示例 2: 输入:arr = [7,3,4,7], target…
leetcode.com 2026-09-17
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
Telegraph
find-two-non-overlapping-sub-arrays-each-with-target-sum
You are given an array of integers arr and an integer target. You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There can be multiple answers so you have to find an answer where the sum of the lengths of the two sub-arrays…
leetcode.cn 2026-09-23
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
Telegraph
minimum-operations-to-reduce-x-to-zero
给你一个整数数组 nums 和一个整数 x 。每一次操作时,你应当移除数组 nums 最左边或最右边的元素,然后从 x 中减去该元素的值。请注意,需要 修改 数组以供接下来的操作使用。 如果可以将 x 恰好 减到 0 ,返回 最小操作数 ;否则,返回 -1 。 示例 1: 输入:nums = [1,1,4,2,3], x = 5 输出:2 解释:最佳解决方案是移除后两个元素,将 x 减到 0 。 示例 2: 输入:nums = [5,6,7,8,9], x = 4 输出:-1 示例 3: 输入:nums…
leetcode.com 2026-09-23
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
Telegraph
minimum-operations-to-reduce-x-to-zero
You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Note that this modifies the array for future operations. Return the minimum…