#017 Topic 6.2 Video 1

View the video at:

https://apclassroom.collegeboard.org/d/tf4etnmrrb?sui=8,6

Did you view the entire video?

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What is the definition of a traversal?

• A traversal is a method for visiting all elements in an array.

• A traversal is a technique for optimizing data storage.
• A traversal is a method for deleting elements in an array.

• A traversal is a way to sort data in an array.

How does an off by one error occur?

• An off by one error is caused by using a negative index in a loop.
• An off by one error occurs when a loop mistakenly uses an index that is one more or one less than the indexes of the array.

• An off by one error happens when an array is accessed with the correct index.
• An off by one error occurs when a loop runs only once.

How can an off by one error occur when traversing an array using a for loop?

• An off by one error occurs when the array is empty and the loop runs.
• The loop skips the every othere element.

• The loop correctly iterates through all elements without any errors.
• An off by one error occurs the condition for the loop includes the length of the array as an index.

for(int i=0; i<10; i++)
           numbers[i] = 2 * i + 1;
// Which index of the array holds the value of 5?

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