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Tehut Getahun -- Recursion #8

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Tehut Getahun -- Recursion #8

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23 changes: 15 additions & 8 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,13 +3,13 @@
## Definitions
Define the following:

- Recursion
- Recursive Case
- Base Case
- Activation Chain/Stack
- Activation Record/Call
- Infinite Recursion/Stack Overflow/Stack too deep
- Tail Recursion
- Recursion: A method that calls itself
- Recursive Case: The part of a method that is recursive (calls itself)
- Base Case: The case that stops the loop
- Activation Chain/Stack: The process of solving the recursive loop
- Activation Record/Call: Each complete step in Activation Stack
- Infinite Recursion/Stack Overflow/Stack too deep: A recursive method without a base case, or one where the starting value bypasses the base case, will continue indefinitely until stopped by the computer for taking up too much memory/room.
- Tail Recursion: Is a special type of problem where the recursive call is the last part of the function.

## Tracing through a recursive method

Expand All @@ -25,9 +25,11 @@ end
```

- What is mystery1(5)?
15
- What is mystery1(10)?
55
- What is mystery1(0)?

Infinite recursion!!
### Trace #2
```
def mystery2(n)
Expand All @@ -40,8 +42,11 @@ end
```

- What is mystery2(123)?
6
- What is mystery2(9005)?
14
- What is mystery2(-123)?
123
- _Added Fun: How could we make `mystery2(-123)` work the way we might expect it to work instead of the way it does?_

### Trace #3
Expand All @@ -61,7 +66,9 @@ end
```

- What is mystery3(1)?
100
- What is mystery3(13)?
100
- What is mystery3(-6)?

### Trace #4
Expand Down