SubrectangleQueries

/*
* 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.
*/
public class SubrectangleQueries {
    private int[][] _rectangle;

    public SubrectangleQueries(int[][] rectangle) {
        this._rectangle = rectangle.clone();
    }

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

        for(int i = row1; i <= row2; i++) {
            for(int j = col1; j <= col2; j++) {
                this._rectangle[i][j] = newValue;
            }
        }
    }

    public int getValue(int row, int col) {
        return this._rectangle[row][col];
    }
}