AP CSA Unit 4: Iteration

Infinite loops

Occurs when the expression in a while loop never evaluates to false. The program continues to run infinitely.

break

Breaks out of a while loop and executes statements that immediately follow while loop.

return

Keyword used in methods to return a value back to the initial program that called the method.

Off by One Error

When a for loop iteration is off by one too many or one too few.

charAt(int index)

charAt(int index) returns the character at the specified index.

Nested Loops

When a loop is placed within another loop. The total number of runs for a nested loop will be the outer loop * inner loop.

Algorithm

Step-by-step process that solves a problem.

Statement execution count

The number of times a statement is executed by the program.

Big-O-Notation

A way to represent how long an algorithm will take to execute. It helps to determine how efficient different approaches to solving a problem are.