Package g2601_2700.s2661_first_completely_painted_row_or_column

Class Solution

java.lang.Object

g2601_2700.s2661_first_completely_painted_row_or_column.Solution

public class Solution
extends Object

2661 - First Completely Painted Row or Column.<p>Medium</p> <p>You are given a <strong>0-indexed</strong> integer array <code>arr</code>, and an <code>m x n</code> integer <strong>matrix</strong> <code>mat</code>. <code>arr</code> and <code>mat</code> both contain <strong>all</strong> the integers in the range <code>[1, m * n]</code>.</p> <p>Go through each index <code>i</code> in <code>arr</code> starting from index <code>0</code> and paint the cell in <code>mat</code> containing the integer <code>arr[i]</code>.</p> <p>Return <em>the smallest index</em> <code>i</code> <em>at which either a row or a column will be completely painted in</em> <code>mat</code>.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2023/01/18/grid1.jpg" alt="image explanation for example 1" /></p> <p><strong>Input:</strong> arr = [1,3,4,2], mat = [[1,4],[2,3]]</p> <p><strong>Output:</strong> 2</p> <p><strong>Explanation:</strong> The moves are shown in order, and both the first row and second column of the matrix become fully painted at arr[2].</p> <p><strong>Example 2:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2023/01/18/grid2.jpg" alt="image explanation for example 2" /></p> <p><strong>Input:</strong> arr = [2,8,7,4,1,3,5,6,9], mat = [[3,2,5],[1,4,6],[8,7,9]]</p> <p><strong>Output:</strong> 3</p> <p><strong>Explanation:</strong> The second column becomes fully painted at arr[3].</p> <p><strong>Constraints:</strong></p> <ul> <li><code>m == mat.length</code></li> <li><code>n = mat[i].length</code></li> <li><code>arr.length == m * n</code></li> <li><code>1 <= m, n <= 10⁵</code></li> <li><code>1 <= m * n <= 10⁵</code></li> <li><code>1 <= arr[i], mat[r][c] <= m * n</code></li> <li>All the integers of <code>arr</code> are <strong>unique</strong>.</li> <li>All the integers of <code>mat</code> are <strong>unique</strong>.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	firstCompleteIndex(int[] arr, int[][] mat)

Methods inherited from class java.lang.Object

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

Constructor Details

Solution

public Solution()

Method Details

firstCompleteIndex

public int firstCompleteIndex(int[] arr,
 int[][] mat)