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leetcode:85. Max rectangle
2022-06-24 06:40:00 【Oceanstar's learning notes】
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The matrix is as follows :
Prepare a histogram array
- The submatrix must be in the second order 0 In the case of rows as foundations ( Look up ), Which submatrix contains 1 most
- obtain [1、1、1、1、1], And then we get maxArea=1+1+1+1+1=5
- The submatrix must be in the second order 1 In the case of rows as foundations ( Look up ), Which submatrix contains 1 most
- obtain [2、0、2、2、2], And then we get maxArea=2+2+2=6
- The submatrix must be in the second order 2 In the case of rows as foundations ( Look up ), Which submatrix contains 1 most
- obtain [3、1、3、0、3], And then we get maxArea=1+1+1=3
- The submatrix must be in the second order 3 In the case of rows as foundations ( Look up ), Which submatrix contains 1 most
- obtain [4、2、4、1、4], And then we get maxArea=2+2+2=6
Get maxArea You can refer to leetcode:84. The largest rectangle in the histogram
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