Package g3001_3100.s3033_modify_the_matrix

Class Solution

java.lang.Object
g3001_3100.s3033_modify_the_matrix.Solution
public class Solution extends Object
3033 - Modify the Matrix.

Easy

Given a 0-indexed m x n integer matrix matrix, create a new 0-indexed matrix called answer. Make answer equal to matrix, then replace each element with the value -1 with the maximum element in its respective column.

Return the matrix answer.

Example 1:

Input: matrix = [[1,2,-1],[4,-1,6],[7,8,9]]

Output: [[1,2,9],[4,8,6],[7,8,9]]

Explanation: The diagram above shows the elements that are changed (in blue).

  • We replace the value in the cell [1][1] with the maximum value in the column 1, that is 8.
  • We replace the value in the cell [0][2] with the maximum value in the column 2, that is 9.

Example 2:

Input: matrix = [[3,-1],[5,2]]

Output: [[3,2],[5,2]]

Explanation: The diagram above shows the elements that are changed (in blue).

Constraints:

  • m == matrix.length
  • n == matrix[i].length
  • 2 <= m, n <= 50
  • -1 <= matrix[i][j] <= 100
  • The input is generated such that each column contains at least one non-negative integer.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • modifiedMatrix

      public int[][] modifiedMatrix(int[][] matrix)