Evaluating Expressions that Contain Nested Loops

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• Learn: Nested Loops

Evaluating Expressions

	Grab a Piece of Paper!
	Evaluate each expression. Verify your answer by running the code in the Java Playground.

Practice 1: Order IDs: years 2019-2021, order 1-5

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• If the loop concludes, what is the value of num when the loop is completed?
• If the code results in an infinite loop, explain why. How would you modify the code so that it is no longer an infinite loop? Make this change.
• If the code causes the loop to not execute at all, explain why. How would you modify the code so that the loop iterates at least 1 time?

Practice 2: Combination lock: 2 dials (0 - 9)

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• If the loop concludes, what are the values of dial, dial2, and codefound when the loop is completed?
• If the code results in an infinite loop, explain why. How would you modify the code so that it is no longer an infinite loop? Make this change.
• If the code causes the loop to not execute at all, explain why. How would you modify the code so that the loop iterates at least 1 time?

Practice 3: Sports matches: 4 teams, 1 rounds

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• If the loop concludes, what is the value of page when the loop is completed?
• If the code results in an infinite loop, explain why. How would you modify the code so that it is no longer an infinite loop? Make this change.
• If the code causes the loop to not execute at all, explain why. How would you modify the code so that the loop iterates at least 1 time?

Resources

Practice: Write Expressions that Contain Nested Loops