diff --git a/solution/0036.Valid Sudoku/Solution.java b/solution/0036.Valid Sudoku/Solution.java
new file mode 100644
index 0000000000000..3878f7a77a15d
--- /dev/null
+++ b/solution/0036.Valid Sudoku/Solution.java	
@@ -0,0 +1,14 @@
+class Solution {
+    public boolean isValidSudoku(char[][] board) {
+        for(int i = 0; i < 9; i++) {
+            HashSet<Character> col = new HashSet<>() , row = new HashSet<>() , cube = new HashSet<>();
+            for(int j = 0; j < 9; j++) {
+                if(board[i][j] != '.' && !row.add(board[i][j])) return false;
+                if(board[j][i] != '.' && !col.add(board[j][i])) return false;
+                int colIndex = i/3*3+j/3 , rowIndex = i%3*3+j%3;
+                if(board[rowIndex][colIndex] != '.' && !cube.add(board[rowIndex][colIndex])) return false;
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file