1. Tell me about the projects you have worked on.
2. Draw the recursion tree for this code.
3. Write down the energy equation for a spring.
4. Given a binary tree, how do you find all leaf nodes?
5. Given a set of pixels forming a closed loop, write a program to fill the region based on the location of a click on the screen. If clicked outside, color everything outside the loop; if clicked inside, color inside the loop. Given APIs getColor() and setColor() based on coordinate.