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Evaluate Code Segments that Iterate Over One-dimensional Array

Evaluating Expressions

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Evaluate each expression.

Verify your answer by running the code in the Java Playground.

Practice 1: Step Tracker

  • Trace the provide code segment and predict the output.
  • Verify your prediction is correct by running the code in the Java Playground.
  • Modify the code segment to compute the average number of steps. Run the code to test.
  • Modify the code to count the number of days at least 8000 steps were recorded. Run the code to test.

Practice 2: Gift List

  • Trace the provide code segment and predict the output.
  • Verify your prediction is correct by running the code in the Java Playground.

Practice 3: Light Bulb Lifespans

  • Trace the provide code segment and predict the output.
  • Verify your prediction is correct by running the code in the Java Playground.
  • Modify the code to determine the minimum lifespan in the list. Run your code to test.

Practice 4: Library Book IDs

  • Trace the provide code segment and predict the output.
  • Verify your prediction is correct by running the code in the Java Playground.
  • Modify the code so that the index where the book is found is printed instead of the id. Run your code to test.

Practice 5: Test Scores

  • Trace the provide code segment and predict the output.
  • Verify your prediction is correct by running the code in the Java Playground.
  • Modify the code so that no score will exceed 100 after they are increased.