Given the roots of two binary trees p and q, write a function to check if they are the same or not.
Two binary trees are considered the same if they are structurally identical, and the nodes have the same value.
Input: p = [1,2,3], q = [1,2,3]
Output: true
Code :
class Solution {
public boolean isSameTree(TreeNode p, TreeNode q) {
if(p==null && q== null)
return true;
if(p== null || q== null)
return false;
if(p.val==q.val)
{
return isSameTree(p.left,q.left) && isSameTree(p.right,q.right);
}
return false;
}
}