[daily question 1] 558. Intersection of quadtrees

558. The intersection of quadtrees
Topic interpretation ：
There are two n * n The binary matrix of - quadTree1 、quadTree2( All elements in the binary matrix are not 0 Namely 1 ).

Returns a representation of n * n Quadtree of binary matrix , It is quadTree1 and quadTree2 Represented by two binary matrices Bitwise logical or operation || Result .

Be careful ：
Quadtree data structure , Each internal node has only four child nodes . Besides , Each node has two properties ：

val： Store the value of the area represented by the leaf node .1 Corresponding True,0 Corresponding False;
isLeaf: When this node is a leaf node, it is True, If it has 4 The child nodes are False .

class Node { 
    
    public boolean val;
    public