Package g1501_1600.s1591_strange_printer_ii

Class Solution

java.lang.Object
g1501_1600.s1591_strange_printer_ii.Solution
public class Solution extends java.lang.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:

Input: targetGrid = [[1,1,1,1],[1,2,2,1],[1,2,2,1],[1,1,1,1]]

Output: true

Example 2:

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 Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isPrintable(int[][] targetGrid)
     

    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

    • isPrintable

      public boolean isPrintable(int[][] targetGrid)