➕增加 leetcode

算法与数据结构/leetcode/leetcode.md

@@ -3323,3 +3323,30 @@ class Solution {
 ```
 
 time:18 beat:8
+
+## 1476. 子矩形查询
+
+<https://leetcode-cn.com/problems/subrectangle-queries/>
+
+```java
+class SubrectangleQueries {
+    private int[][] rectangle;
+    public SubrectangleQueries(int[][] rectangle) {
+        this.rectangle = rectangle;
+    }
+
+    public void updateSubrectangle(int row1, int col1, int row2, int col2, int newValue) {
+        for(int i = row1;i<= row2;i++){
+            for(int j = col1;j<=col2;j++){
+                rectangle[i][j] = newValue;
+            }
+        }
+    }
+
+    public int getValue(int row, int col) {
+        return rectangle[row][col];
+    }
+}
+```
+
+time: 30 beat:86