Class Solution

java.lang.Object
g1501_1600.s1591_strange_printer_ii.Solution

public class Solution extends Object
1591 - Strange Printer II\. Hard There is a strange printer with the following two special requirements: * On each turn, the printer will print a solid rectangular pattern of a single color on the grid. This will cover up the existing colors in the rectangle. * Once the printer has used a color for the above operation, **the same color cannot be used again**. You are given a `m x n` matrix `targetGrid`, where `targetGrid[row][col]` is the color in the position `(row, col)` of the grid. Return `true` _if it is possible to print the matrix_ `targetGrid`_,_ _otherwise, return_ `false`. **Example 1:** ![](https://assets.leetcode.com/uploads/2021/12/23/print1.jpg) **Input:** targetGrid = \[\[1,1,1,1],[1,2,2,1],[1,2,2,1],[1,1,1,1]] **Output:** true **Example 2:** ![](https://assets.leetcode.com/uploads/2021/12/23/print2.jpg) **Input:** targetGrid = \[\[1,1,1,1],[1,1,3,3],[1,1,3,4],[5,5,1,4]] **Output:** true **Example 3:** **Input:** targetGrid = \[\[1,2,1],[2,1,2],[1,2,1]] **Output:** false **Explanation:** It is impossible to form targetGrid because it is not allowed to print the same color in different turns. **Constraints:** * `m == targetGrid.length` * `n == targetGrid[i].length` * `1 <= m, n <= 60` * `1 <= targetGrid[row][col] <= 60`
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • isPrintable

      public boolean isPrintable(int[][] targetGrid)