give integer array preorder postorder preorder preorder traversal binary tree distinct value postorder postorder traversal tree reconstruct return binary treeif exist multiple answer return Example 1input preorder 1245367 postorder 4526731output 1234567example 2input preorder 1 postorder 1output 1 Constraints1 preorderlength 301 preorderi preorderlengthAll value preorder uniquepostorderlength preorderlength1 postorderi postorderlengthAll value postorder uniqueIt guarantee preorder postorder preorder traversal postorder traversal binary tree