(a) Assume that you are given both the preorder and postorder traversal of some binary tree t. Prove that this information, taken together, is not necessarily sufficient to reconstruct t uniquely, even if each value in t occurs only once. (b) Now, assume that you have the preorder and inorder traversals of a tree (given below). Construct the corresponding binary tree and determine its postorder traversal.
Preorder Traversal: D C B A F E
Inorder Traversal: C A B D E F

This technology is used to produce high-quality documents that look good on the computer screen and in print.

[a] create a class called “cycle” which has two instance integer variables as properties, “numberofwheels” and “weight.” create a constructor with two parameters, using the same variable names in the parameter list. assign each variable to numberofwheels” and “weight” respectively. write a separate application to test the class and display its properties. note: do not change the names of the instance variables or the variables listed in the constructor’s parameter list. [b] edit your class cycle by adding a default constructor which will assign the default values of 100 to represent the numberofwheels, and 1000 to represent the weight, by invoking a call to the other constructor. modify your application created in [a] to test the class.

Learning sign language is an example of a(n) learning sign language is an example of a(n)