Package g2701_2800.s2718_sum_of_matrix_after_queries

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    2718 - Sum of Matrix After Queries.

    Medium

    You are given an integer n and a 0-indexed 2D array queries where <code>queriesi = type<sub>i</sub>, index<sub>i</sub>, val<sub>i</sub></code>.

    Initially, there is a 0-indexed n x n matrix filled with 0's. For each query, you must apply one of the following changes:

    • if <code>type<sub>i</sub> == 0</code>, set the values in the row with <code>index<sub>i</sub></code> to <code>val<sub>i</sub></code>, overwriting any previous values.

    • if <code>type<sub>i</sub> == 1</code>, set the values in the column with <code>index<sub>i</sub></code> to <code>val<sub>i</sub></code>, overwriting any previous values.

    Return the sum of integers in the matrix after all queries are applied.

    Example 1:

    Input: n = 3, queries = [0,0,1,1,2,2,0,2,3,1,0,4]

    Output: 23

    Explanation: The image above describes the matrix after each query. The sum of the matrix after all queries are applied is 23.

    Example 2:

    Input: n = 3, queries = [0,0,4,0,1,2,1,0,1,0,2,3,1,2,1]

    Output: 17

    Explanation: The image above describes the matrix after each query. The sum of the matrix after all queries are applied is 17.

    Constraints:

    • <code>1 <= n <= 10<sup>4</sup></code>

    • <code>1 <= queries.length <= 5 * 10<sup>4</sup></code>

    • queries[i].length == 3

    • <code>0 <= type<sub>i</sub><= 1</code>

    • <code>0 <= index<sub>i</sub>< n</code>

    • <code>0 <= val<sub>i</sub><= 10<sup>5</sup></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 Long matrixSumQueries(Integer n, Array<IntArray> queries)

      • Methods inherited from class java.lang.Object

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