Closed labuladong closed 1 year ago
一维数组中的前缀和: Q303:https://leetcode.cn/problems/range-sum-query-immutable/solution/by-wu-yue-yjc-6ycw/ 二维矩阵中的前缀和: Q304:https://leetcode.cn/problems/range-sum-query-2d-immutable/solution/by-wu-yue-yjc-ppdw/
做到一眼看出题目是一个前缀和问题
Leetcode 303. Range Sum Query - Immutable https://leetcode.com/problems/range-sum-query-immutable/discuss/2858326/java-solution
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