Package g1401_1500.s1476_subrectangle_queries

Class SubrectangleQueries

java.lang.Object
g1401_1500.s1476_subrectangle_queries.SubrectangleQueries
public class SubrectangleQueries extends Object
1476 - Subrectangle Queries\. Medium 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`

  • Constructor Details

    • SubrectangleQueries

      public SubrectangleQueries(int[][] rectangle)

  • Method Details

    • updateSubrectangle

      public void updateSubrectangle(int row1, int col1, int row2, int col2, int newValue)

    • getValue

      public int getValue(int row, int col)