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1476. Subrectangle Queries

中文文档

Description

Implement the class SubrectangleQueries which receives a rows x cols rectangle as a matrix of integers in the constructor and supports two methods:

1. updateSubrectangle(int row1, int col1, int row2, int col2, int newValue)

  • Updates all values with newValue in the subrectangle whose upper left coordinate is (row1,col1) and bottom right coordinate is (row2,col2).

2. getValue(int row, int col)

  • Returns the current value of the coordinate (row,col) from the rectangle.

 

Example 1:

Input

["SubrectangleQueries","getValue","updateSubrectangle","getValue","getValue","updateSubrectangle","getValue","getValue"]

[[[[1,2,1],[4,3,4],[3,2,1],[1,1,1]]],[0,2],[0,0,3,2,5],[0,2],[3,1],[3,0,3,2,10],[3,1],[0,2]]

Output

[null,1,null,5,5,null,10,5]

Explanation

SubrectangleQueries subrectangleQueries = new SubrectangleQueries([[1,2,1],[4,3,4],[3,2,1],[1,1,1]]);  

// The initial rectangle (4x3) looks like:

// 1 2 1

// 4 3 4

// 3 2 1

// 1 1 1

subrectangleQueries.getValue(0, 2); // return 1

subrectangleQueries.updateSubrectangle(0, 0, 3, 2, 5);

// After this update the rectangle looks like:

// 5 5 5

// 5 5 5

// 5 5 5

// 5 5 5 

subrectangleQueries.getValue(0, 2); // return 5

subrectangleQueries.getValue(3, 1); // return 5

subrectangleQueries.updateSubrectangle(3, 0, 3, 2, 10);

// After this update the rectangle looks like:

// 5   5   5

// 5   5   5

// 5   5   5

// 10  10  10 

subrectangleQueries.getValue(3, 1); // return 10

subrectangleQueries.getValue(0, 2); // return 5

Example 2:

Input

["SubrectangleQueries","getValue","updateSubrectangle","getValue","getValue","updateSubrectangle","getValue"]

[[[[1,1,1],[2,2,2],[3,3,3]]],[0,0],[0,0,2,2,100],[0,0],[2,2],[1,1,2,2,20],[2,2]]

Output

[null,1,null,100,100,null,20]

Explanation

SubrectangleQueries subrectangleQueries = new SubrectangleQueries([[1,1,1],[2,2,2],[3,3,3]]);

subrectangleQueries.getValue(0, 0); // return 1

subrectangleQueries.updateSubrectangle(0, 0, 2, 2, 100);

subrectangleQueries.getValue(0, 0); // return 100

subrectangleQueries.getValue(2, 2); // return 100

subrectangleQueries.updateSubrectangle(1, 1, 2, 2, 20);

subrectangleQueries.getValue(2, 2); // return 20

 

Constraints:

  • There will be at most 500 operations considering both methods: updateSubrectangle and getValue.
  • 1 <= rows, cols <= 100
  • rows == rectangle.length
  • cols == rectangle[i].length
  • 0 <= row1 <= row2 < rows
  • 0 <= col1 <= col2 < cols
  • 1 <= newValue, rectangle[i][j] <= 10^9
  • 0 <= row < rows
  • 0 <= col < cols

Solutions

Python3



Java




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