https://leetcode-solutions-5zk.pages.dev/tags/binary-indexed-tree/Recent content in Binary Indexed Tree on LeetCode 题解笔记Hugozh-cn2026 ZenzZweiMon, 11 May 2026 12:12:02 +0800https://leetcode-solutions-5zk.pages.dev/posts/2286-booking-concert-tickets-in-groups/Wed, 06 May 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2286-booking-concert-tickets-in-groups/Hard | Binary Search, Design, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/3515-shortest-path-in-a-weighted-tree/Wed, 06 May 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3515-shortest-path-in-a-weighted-tree/Hard | Array, Tree, Depth-First Search, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/1505-minimum-possible-integer-after-at-most-k-adjacent-swaps-on-digits/Wed, 29 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1505-minimum-possible-integer-after-at-most-k-adjacent-swaps-on-digits/Hard | String, Greedy, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/0406-queue-reconstruction-by-height/Wed, 29 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0406-queue-reconstruction-by-height/Medium | Array, Binary Indexed Tree, Segment Tree, Sortinghttps://leetcode-solutions-5zk.pages.dev/posts/3245-alternating-groups-iii/Mon, 27 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3245-alternating-groups-iii/Hard | Array, Binary Indexed Tree, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/3380-maximum-area-rectangle-with-point-constraints-i/Mon, 27 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3380-maximum-area-rectangle-with-point-constraints-i/Medium | Array, Math, Binary Indexed Tree, Segment Tree, Geometry, Sorting, Enumerationhttps://leetcode-solutions-5zk.pages.dev/posts/3382-maximum-area-rectangle-with-point-constraints-ii/Mon, 27 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3382-maximum-area-rectangle-with-point-constraints-ii/Hard | Array, Math, Binary Indexed Tree, Segment Tree, Geometry, Sortinghttps://leetcode-solutions-5zk.pages.dev/posts/3624-number-of-integers-with-popcount-depth-equal-to-k-ii/Mon, 27 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3624-number-of-integers-with-popcount-depth-equal-to-k-ii/Hard | Array, Divide and Conquer, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/3671-sum-of-beautiful-subsequences/Mon, 27 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3671-sum-of-beautiful-subsequences/Hard | Array, Math, Binary Indexed Tree, Number Theoryhttps://leetcode-solutions-5zk.pages.dev/posts/3072-distribute-elements-into-two-arrays-ii/Sun, 26 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3072-distribute-elements-into-two-arrays-ii/Hard | Array, Binary Indexed Tree, Segment Tree, Simulationhttps://leetcode-solutions-5zk.pages.dev/posts/3161-block-placement-queries/Sun, 26 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3161-block-placement-queries/Hard | Array, Binary Search, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/3187-peaks-in-array/Sun, 26 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/3187-peaks-in-array/Hard | Array, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/2659-make-array-empty/Sat, 25 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2659-make-array-empty/Hard | Array, Binary Search, Greedy, Binary Indexed Tree, Segment Tree, Sorting, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/2736-maximum-sum-queries/Sat, 25 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2736-maximum-sum-queries/Hard | Array, Binary Search, Stack, Binary Indexed Tree, Segment Tree, Sorting, Monotonic Stackhttps://leetcode-solutions-5zk.pages.dev/posts/2916-subarrays-distinct-element-sum-of-squares-ii/Sat, 25 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2916-subarrays-distinct-element-sum-of-squares-ii/Hard | Array, Dynamic Programming, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/2926-maximum-balanced-subsequence-sum/Sat, 25 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2926-maximum-balanced-subsequence-sum/Hard | Array, Binary Search, Dynamic Programming, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/2940-find-building-where-alice-and-bob-can-meet/Sat, 25 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2940-find-building-where-alice-and-bob-can-meet/Hard | Array, Binary Search, Stack, Binary Indexed Tree, Segment Tree, Heap (Priority Queue), Monotonic Stackhttps://leetcode-solutions-5zk.pages.dev/posts/2179-count-good-triplets-in-an-array/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2179-count-good-triplets-in-an-array/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/2193-minimum-number-of-moves-to-make-palindrome/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2193-minimum-number-of-moves-to-make-palindrome/Hard | Two Pointers, String, Greedy, Binary Indexed Treehttps://leetcode-solutions-5zk.pages.dev/posts/2250-count-number-of-rectangles-containing-each-point/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2250-count-number-of-rectangles-containing-each-point/Medium | Array, Hash Table, Binary Search, Binary Indexed Tree, Sortinghttps://leetcode-solutions-5zk.pages.dev/posts/2407-longest-increasing-subsequence-ii/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2407-longest-increasing-subsequence-ii/Hard | Array, Divide and Conquer, Dynamic Programming, Binary Indexed Tree, Segment Tree, Queue, Monotonic Queuehttps://leetcode-solutions-5zk.pages.dev/posts/2424-longest-uploaded-prefix/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2424-longest-uploaded-prefix/Medium | Hash Table, Binary Search, Union-Find, Design, Binary Indexed Tree, Segment Tree, Heap (Priority Queue), Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/2426-number-of-pairs-satisfying-inequality/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2426-number-of-pairs-satisfying-inequality/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/2552-count-increasing-quadruplets/Fri, 24 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/2552-count-increasing-quadruplets/Hard | Array, Dynamic Programming, Binary Indexed Tree, Enumeration, Prefix Sumhttps://leetcode-solutions-5zk.pages.dev/posts/1395-count-number-of-teams/Thu, 23 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1395-count-number-of-teams/Medium | Array, Dynamic Programming, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/1409-queries-on-a-permutation-with-key/Thu, 23 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1409-queries-on-a-permutation-with-key/Medium | Array, Binary Indexed Tree, Simulationhttps://leetcode-solutions-5zk.pages.dev/posts/1649-create-sorted-array-through-instructions/Thu, 23 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1649-create-sorted-array-through-instructions/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/1964-find-the-longest-valid-obstacle-course-at-each-position/Thu, 23 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1964-find-the-longest-valid-obstacle-course-at-each-position/Hard | Array, Binary Search, Binary Indexed Treehttps://leetcode-solutions-5zk.pages.dev/posts/1157-online-majority-element-in-subarray/Wed, 22 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/1157-online-majority-element-in-subarray/Hard | Array, Binary Search, Design, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/0493-reverse-pairs/Tue, 21 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0493-reverse-pairs/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/0673-number-of-longest-increasing-subsequence/Tue, 21 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0673-number-of-longest-increasing-subsequence/Medium | Array, Dynamic Programming, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/0327-count-of-range-sum/Mon, 20 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0327-count-of-range-sum/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/0218-the-skyline-problem/Fri, 17 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0218-the-skyline-problem/Hard | Array, Divide and Conquer, Binary Indexed Tree, Segment Tree, Sweep Line, Sorting, Heap (Priority Queue), Ordered Sethttps://leetcode-solutions-5zk.pages.dev/posts/0307-range-sum-query-mutable/Fri, 17 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0307-range-sum-query-mutable/Medium | Array, Divide and Conquer, Design, Binary Indexed Tree, Segment Treehttps://leetcode-solutions-5zk.pages.dev/posts/0315-count-of-smaller-numbers-after-self/Fri, 17 Apr 2026 00:00:00 +0000https://leetcode-solutions-5zk.pages.dev/posts/0315-count-of-smaller-numbers-after-self/Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set