原文:[LeetCode] Range Sum Query - Immutable & Range Sum Query 2D - Immutable

Range Sum Query Immutable Given an integer arraynums, find the sum of the elements between indicesiandj i j , inclusive. Example: Note: You may assume that the array does not change. There are many ca ...

2015-11-16 18:59 0 2163 推荐指数:

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308. Range Sum Query 2D - Mutable

题目: 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 ...

Sat Dec 19 19:00:00 CST 2015 0 4824
307. Range Sum Query - Mutable

题目: Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. The update(i, val) function modifies nums ...

Fri Dec 18 21:02:00 CST 2015 0 2543
Leetcode: Count of Range Sum

参考:https://leetcode.com/discuss/79083/share-my-solution First of all, let's look at the naive solution. Preprocess to calculate the prefix ...

Mon Jan 18 11:49:00 CST 2016 0 3695
 
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