AP CSA iteration review

What is iteration?

A programming technique to execute a block of code repeatedly.

Define 'for loop'.

A loop that executes a set number of times, typically using a counter variable.

True or false: A while loop must have a counter.

False, because a while loop continues until a condition is false, not based on a counter.

Difference between for loop and while loop.

For loops are used when the number of iterations is known; while loops are used for indefinite iterations.

Fill in the blank: The ______ statement exits a loop immediately.

break

What does 'continue' do in a loop?

It skips the current iteration and proceeds to the next iteration of the loop.

What is an infinite loop?

A loop that never terminates because its terminating condition is never satisfied.

What is an outer loop?

A loop that contains another loop inside it, called an inner loop.

True or false: Nested loops can lead to high time complexity.

True, because the total iterations increase with each nested loop.

What is a loop control variable?

A variable that determines how many times a loop will execute.

How do you declare a for loop in Java?

for(initialization; condition; increment/decrement) { // code }

What happens if the loop condition is never false?

The loop will run indefinitely, leading to an infinite loop.

True or false: The scope of loop variables is limited to the loop.

True, because loop variables can only be accessed within the loop.

Define 'do-while loop'.

A loop that executes its block of code at least once before checking the condition.

Fill in the blank: The ______ statement can be used to skip to the next iteration.

continue

What is a common use of for-each loops?

To iterate over elements in an array or collection without using an index.

Comparison of for loop vs. while loop.

- For loop: known iterations - While loop: unknown iterations

What type of loop is best for traversing an array?

Typically a for loop or for-each loop is best.