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.<p>Medium</p> <p>Implement the class <code>SubrectangleQueries</code> which receives a <code>rows x cols</code> rectangle as a matrix of integers in the constructor and supports two methods:</p> <ol> <li><code>updateSubrectangle(int row1, int col1, int row2, int col2, int newValue)</code></li> </ol> <ul> <li>Updates all values with <code>newValue</code> in the subrectangle whose upper left coordinate is <code>(row1,col1)</code> and bottom right coordinate is <code>(row2,col2)</code>.</li> </ul> <ol start="2"> <li><code>getValue(int row, int col)</code></li> </ol> <ul> <li>Returns the current value of the coordinate <code>(row,col)</code> from the rectangle.</li> </ul> <p><strong>Example 1:</strong></p> <p><strong>Input</strong> [&ldquo;SubrectangleQueries&rdquo;,&ldquo;getValue&rdquo;,&ldquo;updateSubrectangle&rdquo;,&ldquo;getValue&rdquo;,&ldquo;getValue&rdquo;,&ldquo;updateSubrectangle&rdquo;,&ldquo;getValue&rdquo;,&ldquo;getValue&rdquo;] [<a href="[1,2,1],[4,3,4],[3,2,1],[1,1,1]">[1,2,1],[4,3,4],[3,2,1],[1,1,1]</a>,[0,2],[0,0,3,2,5],[0,2],[3,1],[3,0,3,2,10],[3,1],[0,2]]</p> <p><strong>Output:</strong> [null,1,null,5,5,null,10,5]</p> <p><strong>Explanation:</strong> 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</p> <p><strong>Example 2:</strong></p> <p><strong>Input</strong> [&ldquo;SubrectangleQueries&rdquo;,&ldquo;getValue&rdquo;,&ldquo;updateSubrectangle&rdquo;,&ldquo;getValue&rdquo;,&ldquo;getValue&rdquo;,&ldquo;updateSubrectangle&rdquo;,&ldquo;getValue&rdquo;] [<a href="[1,1,1],[2,2,2],[3,3,3]">[1,1,1],[2,2,2],[3,3,3]</a>,[0,0],[0,0,2,2,100],[0,0],[2,2],[1,1,2,2,20],[2,2]]</p> <p><strong>Output:</strong> [null,1,null,100,100,null,20]</p> <p><strong>Explanation:</strong> 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</p> <p><strong>Constraints:</strong></p> <ul> <li>There will be at most <code>500</code> operations considering both methods: <code>updateSubrectangle</code> and <code>getValue</code>.</li> <li><code>1 <= rows, cols <= 100</code></li> <li><code>rows == rectangle.length</code></li> <li><code>cols == rectangle[i].length</code></li> <li><code>0 <= row1 <= row2 < rows</code></li> <li><code>0 <= col1 <= col2 < cols</code></li> <li><code>1 <= newValue, rectangle[i][j] <= 10^9</code></li> <li><code>0 <= row < rows</code></li> <li><code>0 <= col < cols</code></li> </ul>

  • 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)