And below are the full explanations of the four questions/solutions: 1994 Intern Question #1: Rectangle Copy: https://youtu.be/ielZBraKsw8 1994 Intern Question #2: String Copy https://youtu.be/sabeq-FtfGw 1994 Intern Question #3: Flood Fill Detection https://youtu.be/OE_UNZW-4_U 1994 Intern Question #4: Circle Outline https://youtu.be/JtgQJT08J1g