public class Solution { public boolean HasSubtree(TreeNode root1,TreeNode root2) { if(root1 == null || root2 == null) return false; if(dfs(root1,root2)) return true; return HasSubtree(root1.left,root2) || HasSubtree(root1.right,root2); } public boolean dfs(TreeNode root1, TreeNode root2) { if(root2 ...