Matrix (59 completed) Back to top # Title Level Cats Solution Languages Date Complete 36 Valid Sudoku Medium N150 solution py Jun 13, 2024 37 Sudoku Solver Hard solution py Sep 01, 2025 48 Rotate Image Medium B75, N150 solution c, py Jun 15, 2024 54 Spiral Matrix Medium B75, N150 solution py Oct 24, 2024 74 Search a 2D Matrix Medium N150 solution py Jun 15, 2024 79 Word Search Medium B75, N150 solution py Jun 27, 2024 200 Number of Islands Medium B75, N150 solution py Jun 17, 2024 212 Word Search II Hard B75, N150 solution py Jun 27, 2024 286 Walls and Gates Medium N150 solution py Jun 15, 2024 302 Smallest Rectangle Enclosing Black Pixels Hard solution py Apr 23, 2025 317 Shortest Distance from All Buildings Hard solution py Mar 18, 2026 348 Design Tic-Tac-Toe Medium solution py Jul 05, 2024 419 Battleships in a Board Medium solution c, py Jun 24, 2024 498 Diagonal Traverse Medium solution go, py Aug 25, 2025 542 01 Matrix Medium solution py Jun 26, 2024 695 Max Area of Island Medium N150 solution c Jun 24, 2024 794 Valid Tic-Tac-Toe State Medium solution py Jul 05, 2024 807 Max Increase to Keep City Skyline Medium solution java Jun 22, 2024 827 Making A Large Island Hard solution py Jan 31, 2025 840 Magic Squares In Grid Medium Daily solution py Aug 09, 2024 861 Score After Flipping Matrix Medium solution c, py Jun 10, 2024 867 Transpose Matrix Easy solution py Jun 15, 2024 885 Spiral Matrix III Medium Daily solution py Aug 08, 2024 909 Snakes and Ladders Medium solution py Jun 12, 2024 959 Regions Cut By Slashes Medium Daily solution py Aug 10, 2024 994 Rotting Oranges Medium N150 solution py Jun 15, 2024 1020 Number of Enclaves Medium solution py Jun 26, 2024 1030 Matrix Cells in Distance Order Easy solution py Jun 04, 2024 1198 Find Smallest Common Element in All Rows Medium solution py Aug 26, 2025 1254 Number of Closed Islands Medium solution py Jun 26, 2024 1267 Count Servers that Communicate Medium solution py Jan 23, 2025 1284 Minimum Number of Flips to Convert Binary Matrix to Zero Matrix Hard solution py Jun 09, 2024 1351 Count Negative Numbers in a Sorted Matrix Easy solution java, py Jun 01, 2024 1368 Minimum Cost to Make at Least One Valid Path in a Grid Hard solution py Jan 18, 2025 1380 Lucky Numbers in a Matrix Easy Daily solution js, py Jul 19, 2024 1568 Minimum Number of Days to Disconnect Island Hard Daily solution py Aug 11, 2024 1605 Find Valid Matrix Given Row and Column Sums Medium Daily solution py Jul 20, 2024 1730 Shortest Path to Get Food Medium solution py Jun 26, 2024 1905 Count Sub Islands Medium solution py Jun 24, 2024 1992 Find All Groups of Farmland Medium solution java, py Jun 24, 2024 2125 Number of Laser Beams in a Bank Medium solution py Oct 27, 2025 2258 Escape the Spreading Fire Hard solution py Jun 15, 2024 2304 Minimum Path Cost in a Grid Medium solution py Jul 29, 2024 2352 Equal Row and Column Pairs Medium solution py Jun 27, 2024 2392 Build a Matrix With Conditions Hard Daily solution py Jul 21, 2024 2482 Difference Between Ones and Zeros in Row and Column Medium solution py Jun 07, 2024 2545 Sort the Students by Their Kth Score Medium solution java, py Jun 24, 2024 2658 Maximum Number of Fish in a Grid Medium solution py Jan 28, 2025 2661 First Completely Painted Row or Column Medium solution py Jan 20, 2025 2664 The Knight’s Tour Medium solution py Oct 26, 2024 2679 Sum in a Matrix Medium solution java May 22, 2024 2684 Maximum Number of Moves in a Grid Medium solution py Oct 29, 2024 2852 Sum of Remoteness of All Cells Medium solution py Jan 23, 2025 2965 Find Missing and Repeated Values Easy solution py Mar 06, 2025 3195 Weekly Contest 403 - q2 - Find the Minimum Area to Cover All Ones I Medium Contest solution py Jul 07, 2024 3212 Weekly Contest 405 - q3 - Count Submatrices With Equal Frequency of X and Y Medium Contest solution py Jul 07, 2024 3239 Biweekly Contest 136 - q2 - Minimum Number of Flips to Make Binary Grid Palindromic I Medium Contest solution py Aug 03, 2024 3240 Biweekly Contest 136 - q3 - Minimum Number of Flips to Make Binary Grid Palindromic II Medium Contest solution py Aug 03, 2024 3242 Design Neighbor Sum Service Easy solution py Aug 04, 2024