leetcode.com 2026-05-30
🔴3161.block-placement-queries
🏷️ Tags
#binary_indexed_tree #segment_tree #array #binary_search
🔴3161.block-placement-queries
🏷️ Tags
#binary_indexed_tree #segment_tree #array #binary_search
Telegraph
block-placement-queries
There exists an infinite number line, with its origin at 0 and extending towards the positive x-axis. You are given a 2D array queries, which contains two types of queries:
leetcode.cn 2026-06-10
🔴3691.maximum-total-subarray-value-ii
🏷️ Tags
#greedy #segment_tree #array #heap_priority_queue
🔴3691.maximum-total-subarray-value-ii
🏷️ Tags
#greedy #segment_tree #array #heap_priority_queue
Telegraph
maximum-total-subarray-value-ii
给你一个长度为 n 的整数数组 nums 和一个整数 k。
leetcode.com 2026-06-10
🔴3691.maximum-total-subarray-value-ii
🏷️ Tags
#greedy #segment_tree #array #heap_priority_queue
🔴3691.maximum-total-subarray-value-ii
🏷️ Tags
#greedy #segment_tree #array #heap_priority_queue
Telegraph
maximum-total-subarray-value-ii
You are given an integer array nums of length n and an integer k. You must select exactly k distinct non-empty subarrays nums[l..r] of nums. Subarrays may overlap, but the exact same subarray (same l and r) cannot be chosen more than once. The value of a…
leetcode.cn 2026-06-25
🟡3737.count-subarrays-with-majority-element-i
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #counting #prefix_sum #merge_sort
🟡3737.count-subarrays-with-majority-element-i
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #counting #prefix_sum #merge_sort
Telegraph
count-subarrays-with-majority-element-i
给你一个整数数组 nums 和一个整数 target。
leetcode.com 2026-06-25
🟡3737.count-subarrays-with-majority-element-i
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #counting #prefix_sum #merge_sort
🟡3737.count-subarrays-with-majority-element-i
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #counting #prefix_sum #merge_sort
Telegraph
count-subarrays-with-majority-element-i
You are given an integer array nums and an integer target. Return the number of subarrays of nums in which target is the majority element. The majority element of a subarray is the element that appears strictly more than half of the times in that subarray.…
leetcode.cn 2026-06-26
🔴3739.count-subarrays-with-majority-element-ii
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #prefix_sum #merge_sort
🔴3739.count-subarrays-with-majority-element-ii
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #prefix_sum #merge_sort
Telegraph
count-subarrays-with-majority-element-ii
给你一个整数数组 nums 和一个整数 target。
leetcode.com 2026-06-26
🔴3739.count-subarrays-with-majority-element-ii
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #prefix_sum #merge_sort
🔴3739.count-subarrays-with-majority-element-ii
🏷️ Tags
#segment_tree #array #hash_table #divide_and_conquer #prefix_sum #merge_sort
Telegraph
count-subarrays-with-majority-element-ii
You are given an integer array nums and an integer target. Return the number of subarrays of nums in which target is the majority element. The majority element of a subarray is the element that appears strictly more than half of the times in that subarray.…
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 2026-08-13
🔴2213.longest-substring-of-one-repeating-character
🏷️ Tags
#segment_tree #array #string #ordered_set
🔴2213.longest-substring-of-one-repeating-character
🏷️ Tags
#segment_tree #array #string #ordered_set
Telegraph
longest-substring-of-one-repeating-character
给你一个下标从 0 开始的字符串 s 。另给你一个下标从 0 开始、长度为 k 的字符串 queryCharacters ,一个下标从 0 开始、长度也是 k 的整数 下标 数组 queryIndices ,这两个都用来描述 k 个查询。 第 i 个查询会将 s 中位于下标 queryIndices[i] 的字符更新为 queryCharacters[i] 。 返回一个长度为 k 的数组 lengths ,其中 lengths[i] 是在执行第 i 个查询 之后 s 中仅由 单个字符重复 组成的 最长子字符串…
leetcode.com 2026-08-13
🔴2213.longest-substring-of-one-repeating-character
🏷️ Tags
#segment_tree #array #string #ordered_set
🔴2213.longest-substring-of-one-repeating-character
🏷️ Tags
#segment_tree #array #string #ordered_set
Telegraph
longest-substring-of-one-repeating-character
You are given a 0-indexed string s. You are also given a 0-indexed string queryCharacters of length k and a 0-indexed array of integer indices queryIndices of length k, both of which are used to describe k queries. The ith query updates the character in s…
leetcode.cn 2026-10-15
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-i
给你一个下标从 0 开始的整数数组 nums 。 定义 nums 一个子数组的 不同计数 值如下:
leetcode.com 2026-10-15
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-i
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as:
leetcode.cn 2026-10-16
🔴2916.subarrays-distinct-element-sum-of-squares-ii
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🔴2916.subarrays-distinct-element-sum-of-squares-ii
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-ii
给你一个下标从 0 开始的整数数组 nums 。 定义 nums 一个子数组的 不同计数 值如下:
leetcode.com 2026-10-16
🔴2916.subarrays-distinct-element-sum-of-squares-ii
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🔴2916.subarrays-distinct-element-sum-of-squares-ii
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-ii
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as:
leetcode.cn 2026-10-29
🔴3841.palindromic-path-queries-in-a-tree
🏷️ Tags
#bit_manipulation #tree #depth_first_search #binary_indexed_tree #segment_tree #array #string #divide_and_conquer
🔴3841.palindromic-path-queries-in-a-tree
🏷️ Tags
#bit_manipulation #tree #depth_first_search #binary_indexed_tree #segment_tree #array #string #divide_and_conquer
Telegraph
palindromic-path-queries-in-a-tree
给你一棵包含 n 个节点的无向树,节点编号从 0 到 n - 1。树由一个长度为 n - 1 的二维数组 edges 表示,其中 edges[i] = [ui, vi] 表示节点 ui 和 vi 之间存在一条无向边。
leetcode.com 2026-10-29
🔴3841.palindromic-path-queries-in-a-tree
🏷️ Tags
#bit_manipulation #tree #depth_first_search #binary_indexed_tree #segment_tree #array #string #divide_and_conquer
🔴3841.palindromic-path-queries-in-a-tree
🏷️ Tags
#bit_manipulation #tree #depth_first_search #binary_indexed_tree #segment_tree #array #string #divide_and_conquer
Telegraph
palindromic-path-queries-in-a-tree
You are given an undirected tree with n nodes labeled 0 to n - 1. This is represented by a 2D array edges of length n - 1, where edges[i] = [ui, vi] indicates an undirected edge between nodes ui and vi. You are also given a string s of length n consisting…
leetcode.cn 2026-11-13
🔴3420.count-non-decreasing-subarrays-after-k-operations
🏷️ Tags
#stack #segment_tree #queue #array #sliding_window #monotonic_queue #monotonic_stack
🔴3420.count-non-decreasing-subarrays-after-k-operations
🏷️ Tags
#stack #segment_tree #queue #array #sliding_window #monotonic_queue #monotonic_stack
Telegraph
count-non-decreasing-subarrays-after-k-operations
给你一个长度为 n 的数组 nums 和一个整数 k 。 对于 nums 中的每一个子数组,你可以对它进行 至多 k 次操作。每次操作中,你可以将子数组中的任意一个元素增加 1 。 注意 ,每个子数组都是独立的,也就是说你对一个子数组的修改不会保留到另一个子数组中。 请你返回最多 k 次操作以内,有多少个子数组可以变成 非递减 的。 如果一个数组中的每一个元素都大于等于前一个元素(如果前一个元素存在),那么我们称这个数组是 非递减 的。 示例 1: 输入:nums = [6,3,1,2,4,4], k…