Package g2501_2600.s2536_increment_submatrices_by_one

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    2536 - Increment Submatrices by One\.

    Medium

    You are given a positive integer n, indicating that we initially have an n x n 0-indexed integer matrix mat filled with zeroes.

    You are also given a 2D integer array query. For each <code>queryi = row1<sub>i</sub>, col1<sub>i</sub>, row2<sub>i</sub>, col2<sub>i</sub></code>, you should do the following operation:

    • Add 1 to every element in the submatrix with the top left corner <code>(row1<sub>i</sub>, col1<sub>i</sub>)</code> and the bottom right corner <code>(row2<sub>i</sub>, col2<sub>i</sub>)</code>. That is, add 1 to mat[x][y] for all <code>row1<sub>i</sub><= x <= row2<sub>i</sub></code> and <code>col1<sub>i</sub><= y <= col2<sub>i</sub></code>.

    Return the matrix mat after performing every query.

    Example 1:

    Input: n = 3, queries = \[\[1,1,2,2],0,0,1,1]

    Output: [1,1,0,1,2,1,0,1,1]

    Explanation: The diagram above shows the initial matrix, the matrix after the first query, and the matrix after the second query.

    • In the first query, we add 1 to every element in the submatrix with the top left corner (1, 1) and bottom right corner (2, 2).

    • In the second query, we add 1 to every element in the submatrix with the top left corner (0, 0) and bottom right corner (1, 1).

    Example 2:

    Input: n = 2, queries = \[\[0,0,1,1]]

    Output: [1,1,1,1]

    Explanation: The diagram above shows the initial matrix and the matrix after the first query.

    • In the first query we add 1 to every element in the matrix.

    Constraints:

    • 1 &lt;= n &lt;= 500

    • <code>1 <= queries.length <= 10<sup>4</sup></code>

    • <code>0 <= row1<sub>i</sub><= row2<sub>i</sub>< n</code>

    • <code>0 <= col1<sub>i</sub><= col2<sub>i</sub>< n</code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Array<IntArray> rangeAddQueries(Integer n, Array<IntArray> queries)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait