solve this 3 question

Question \#1: Briefly describe the basic fill area algorithm. Use figures and pictures to support your answer. ( 10 points) Question \#2: Given the image below, apply flood fill algorithm starting at pixel (3,3). Use a red color for filling and a stack to show every single step. ( 20 points) Question \#3: Consider the following function: Using a stack, explain the output produced when Bingo (5) is called? Show your work step by step. ( 20 points )