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2021-05-12 23:14:26 +08:00
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leetcode/0304.Range-Sum-Query-2D-Immutable/README.md
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@@ -5,7 +5,7 @@
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).
![https://leetcode.com/static/images/courses/range_sum_query_2d.png](https://leetcode.com/static/images/courses/range_sum_query_2d.png)
![https://leetcode.com/static/images/courses/range_sum_query_2d.png](https://assets.leetcode.com/uploads/2021/03/14/sum-grid.jpg)
The above rectangle (with the red border) is defined by (row1, col1) = **(2, 1)** and (row2, col2) = **(4, 3)**, which contains sum = **8**.