Savitch Ch 14

Overview ,[object Object],[object Object],[object Object],Slide 14-

Recursive Functions for Tasks ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Case Study: Vertical Numbers ,[object Object],[object Object],Slide 14-

Case Study: Vertical Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Case Study: Vertical Numbers (cont.) ,[object Object],[object Object],Slide 14-

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Case Study: Vertical Numbers (cont.) Slide 14- Display 14.1 ( 1 ) Display 14.1 ( 2 )

Tracing a Recursive Call ,[object Object],Slide 14- Calls write_vertical(12) resume Output 3 Function call ends

Tracing write_vertical(12) ,[object Object],Slide 14- Calls write_vertical(1) resume Output 2 Function call ends

Tracing write_vertical(1) ,[object Object],Slide 14- Simplest case is now true Function call ends Output 1

A Closer Look at Recursion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

How Recursion Ends ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

"Infinite" Recursion ,[object Object],[object Object],Slide 14-

Example: Infinite Recursion ,[object Object],Slide 14-

Stacks for Recursion ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Last-in / First-out ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Stacks and The Recursive Call ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

The Stack and Ending Recursive Calls ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Activation Frames ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Stack Overflow ,[object Object],[object Object],[object Object],[object Object],Slide 14-

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Recursion versus Iteration Slide 14- Display 14.2

Section 14.1 Conclusion ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Recursive Functions for Values ,[object Object],[object Object],[object Object],[object Object],Slide 14-

[object Object],[object Object],[object Object],[object Object],Program Example: A Powers Function Slide 14- Display 14.3

[object Object],Tracing power(2,1) Slide 14- Call to power(2,0) resume 1 return 2 Function Ends

Tracing power(2,0) ,[object Object],Slide 14- Function call ends 1 is returned

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Tracing power(2, 3) Slide 14- Display 14.4

Section 14.2 Conclusion ,[object Object],[object Object],Slide 14-

Thinking Recursively ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Reviewing the power function ,[object Object],[object Object],Slide 14-

Review of power (cont.) ,[object Object],[object Object],Slide 14-

Recursive void-functions ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Case Study: Binary Search ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Binary Search: Problem Definition ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Binary Search Problem Definition (cont.) ,[object Object],Slide 14-

Binary Search Algorithm Design ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 14-

Binary Search Algorithm Design (cont.) ,[object Object],[object Object],Slide 14-

Binary Search Algorithm Design (cont.) ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Binary Search Algorithm Design (cont.) ,[object Object],Slide 14-

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Binary Search Algorithm Design (cont.) Slide 14- Display 14.5 Display 14.7

[object Object],[object Object],Binary Search Writing the Code Slide 14- Display 14.6 (1) Display 14.6 (2)

Binary Search Checking the Recursion ,[object Object],[object Object],Slide 14-

Binary Search Checking the Recursion (cont.) ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Binary Search Checking the Recursion (cont.) ,[object Object],[object Object],[object Object],Slide 14-

Binary Search Efficiency ,[object Object],[object Object],[object Object],[object Object],Slide 14-

[object Object],[object Object],[object Object],Binary Search An Iterative Version Slide 14- Display 14.8

Program Example: A Recursive Member Function ,[object Object],[object Object],[object Object],Slide 14-

[object Object],[object Object],[object Object],[object Object],Class BankAccount Function update Slide 14- Display 14.9 (1) Display 14.9 (2)

Function update Checking the Recursion ,[object Object],[object Object],[object Object],[object Object],Slide 14-

Function update Checking the Recursion (cont.) ,[object Object],[object Object],Slide 14-

Savitch Ch 14

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Savitch Ch 14