(a) Write a method that prints each binary tree rotated to the left with proper indentation, as in Figure 6.65a. (b) Adopt this method to print a threaded tree sideways; if appropriate, print the key...

(a) Write a method that prints each binary tree rotated to the left with proper indentation, as in Figure 6.65a.

(b) Adopt this method to print a threaded tree sideways; if appropriate, print the key in the successor node, as in Figure 6.65b.