Can you solve this real interview question? Range Sum Query 2D - Immutable - Given a 2D matrix matrix, handle multiple queries of the following type: * Calculate the sum of the elements of matrix inside the rectangle defined by its upper left corner (r
Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). Range Sum Query 2D The above rectangle (with the red border) is defined by (row1, col1)= (2, 1) and (row2, col2)...
Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). Range Sum Query 2D The above rectangle (with the red border) is defined by (row1, col1)= (2, 1) and (row2, col2)...
Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). Range Sum Query 2D The above rectangle (with the red border) is defined by (row1, col1) = (2, 1) and (row2, col2...
2D Segment Tree -> Quad Tree. classNode//2D Segment Tree{public: Node(vector<vector<int>> &m,intix0,intiy0,intix1,intiy1) : sum(0), x0(ix0), x1(ix1), y0(iy0), y1(iy1), ul(nullptr), ur(nullptr), dl(nullptr), dr(nullptr) ...
sumRegion(1, 2, 2, 4) -> 12 Note: You may assume that the matrix does not change. There are many calls tosumRegionfunction. You may assume thatrow1 ≤row2 andcol1 ≤col2. 这道题让我们求一个二维区域和的检索,是之前那道题Range Sum Query - Immutable 区域和检索的延伸。有了之前那道...
力扣leetcode-cn.com/problems/range-sum-query-2d-immutable/solution/er-wei-qu-yu-he-jian-suo-ju-zhen-bu-ke-b-2z5n/ 力扣leetcode-cn.com/problems/range-sum-query-2d-immutable/solution/ru-he-qiu-er-wei-de-qian-zhui-he-yi-ji-y-6c21/...
Leetcode 1031 Maximum Sum of Two Non-Overlapping Subarrays Leetcode 523 Continuous Subarray Sum Leetcode 304 Range Sum Query 2D - Immutable 以上内容皆为面试中高频的知识点,以下知识点和题目在面试中属于中等频率(大概面10道题会遇到一次),时间不足的情况下,请以准备上面的知识点为主。 并查集(Union Fin...
0303 Range Sum Query - Immutable Go 57.9% Easy 0304 Range Sum Query 2D - Immutable Go 52.1% Medium 0305 Number of Islands II 39.5% Hard 0306 Additive Number Go 30.9% Medium 0307 Range Sum Query - Mutable Go 40.7% Medium 0308 Range Sum Query 2D - Mutable 42.2% Hard 0309 Best...
0303 Range Sum Query - Immutable Go 38.40% Easy 0304 Range Sum Query 2D - Immutable 32.70% Medium 0305 Number of Islands II 41.70% Hard 0306 Additive Number Go 28.40% Medium 0307 Range Sum Query - Mutable Go 29.00% Medium 0308 Range Sum Query 2D - Mutable 32.20% Hard 0309 Best...