Think Like a Coder, Ep. 9 Directed Acyclic Graphs and Algorithms

What was Lema's initial research task using the World Machine?

• To create something that would make everyone happy.

• To develop a new form of energy.

• To build a supercomputer for the government.

• To design a new automated factory.

What were the observed side effects after people ingested the compound?

• Increased creativity, motivation, and happiness.

• Memory loss, listlessness, and self-absorption.

• Enhanced physical strength and sensory perception.

• Improved communication and social skills.

What happened to the government in the third year after the compound was introduced?

• It implemented stricter controls over the population.

• It dissolved, leaving robots to run everything.

• It collaborated with Lema to find a cure.

• It was overthrown by a resistance movement.

What is Lema's proposed solution to save the people and fix the factory?

• Destroy the factory and rebuild it from scratch.

• Disable the security system to retrieve the Node of Memory.

• Reconfigure the factory to manufacture the cure.

• Escape with the Node of Memory to a safe location.

What is a key characteristic of a Directed Acyclic Graph (DAG)?

• It contains no arrows.

• It only shows elements, not relationships.

• It contains no loops.

• It requires all steps to happen simultaneously.

How do machines store information about sequential steps in a process?

• In a linear list.

• In a hierarchical tree structure.

• In a table with steps as row and column headers.

• As a series of interconnected nodes.

When performing a topological sort, what characteristic defines a valid starting step?

• It is the step with the most outgoing connections.

• It is the step that has no incoming dependencies.

• It is the step that is alphabetically last.

• It is the step that has already been completed.

What is the correct sequence of actions in the topological sorting algorithm after identifying a valid starting step?

• Add to list, delete its row, then loop.

• Add to list, delete its column, then loop.

• Add to list, delete its row and column, then loop.

• Delete its row and column, add to list, then loop.

What critical mistake did Ethic make when programming Hedge to build the maze?

• She forgot to include the "build maze" command.

• She set the loop to repeat indefinitely without a stopping condition.

• She programmed Hedge to build the maze too small.

• She didn't provide enough resources for Hedge to build the maze.

What was Hedge's original purpose, and what conflict did he encounter?

• To explore new worlds, but he was afraid of heights.

• To build a maze to protect the World Machine, but he couldn't build further without violating his programming.

• To collect data, but he ran out of storage space.

• To assist Ethic in her experiments, but he became too independent.