二维数组版Range Sum Leetcode 304. Range Sum Query 2D - Immutable, Terence_F的文章 classNumArray{ vector<int> dp {0}; public: NumArray(vector<int> &nums) { intsum =0; for(intn: nums) { sum += n; dp.push_back(sum); } } intsumRange(inti,intj){ returndp[j +1] - dp[i];...
代码如下: 1classNumArray {2int[] dp;3publicNumArray(int[] nums) {4if( nums ==null|| nums.length == 0 )return;5dp =newint[nums.length];6dp[0]=nums[0];7for(inti = 1 ; i < nums.length ; i ++){8dp[i] = dp[i-1]+nums[i];9}10}1112publicintsumRange(inti,intj) {13r...
}intquerySumTree(SumTreeNode* p,inti,intj){if(p->range.first == i && p->range.second == j)returnp->sum;//叶节点if(p->left->range.second >= j){//仅在左子树的范围内returnquerySumTree(p->left, i, j); }elseif(p->right->range.first <= i){//仅在右子树的范围内returnqueryS...
303. Range Sum Query - Immutable # 题目 # Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given nums = [-2, 0, 3, -5, 2, -1] sumRange(0, 2) -> 1 sumRange(2, 5) -> -1 sumRange(0, 5) -> -3
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
[leetcode]303. Range Sum Query - Immutable Given an integer arraynums, find the sum of the elements between indicesiandj(i≤j), inclusive. Example: Given nums = [-2, 0, 3, -5, 2, -1] sumRange(0, 2) -> 1 sumRange(2, 5) -> -1 sumRange(0, 5) -> -3...
LeetCode: 303. Range Sum Query - Immutable 题目描述 Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given nums = [-2, 0, 3, -5, 2, -1] sumRange(0, 2) -> 1 ...
Golang中如何实现Range Sum Query - Immutable功能? 在Leetcode 303题中,Golang的解法有哪些优化技巧? Golang实现Range Sum Query - Immutable时,时间复杂度是多少? 版权声明:原创勿转 https://cloud.tencent.com/developer/article/1412946 思路 保存一个slice code 代码语言:javascript 代码运行次数:0 运行 AI...
[LeetCode] Range Sum Query Immutable 墨迹js Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given nums = [-2, 0, 3, -5, 2, -1] sum Given an integer array nums, find the sum of the elements between indices i ...
来源：力扣（LeetCode）链接：https://leetcode-cn.com/problems/range-sum-query-immutable/著作权归领扣网络所有。商业转载请联系官方授权，非商业转载请注明出处。解法一：累加 首先，给NumArray声明一个int数组型成员变量nums，在构造方法中初始化nums。sumRange这个方法的实现就是数组的left~right位置的元素值相加...