Data Abstraction
What result do you receive when you use a print or display command?
Display the value of the variable or constant
What is CamelCase? Give me an example of naming a variable using the words 'first' & 'last'.
CamelCase is where two words are combined and the first word has no capital while the first letter of the 2nd word is capital. Example: firstLast
What is a string?
A string is a list or array of sequential characters.
What is a linear search?
An algorithm that iterates through each value in a list until it finds the target value.
When is Abstraction used?
When you store and access data information.
What are variables?
Variables are basically “Containers” which can hold values, you can name it anything you want. These variables can hold both strings and numbers.
What is the "+" operator used for?
It is used to add variables or stings together.
What is a heuristic solution?
A technique that helps an algorithm find a good solution to a hard problem. Ex: always walking toward the north star when you are stuck in a forest
What is the minimum number of values a list has?
0 (Empty List)
What data types would these be (think of string, boolean, integer, float):
Highscore
getName
isRaining
Highscore would be an integer, getName would be a string, and isRaining (a little tricky) would be a boolean (yes/no)
How are two strings added together?
By placing the second string at the end of the first string with the "+" operator in the middle.
What is an API and what is it used for?
An API is an Application Programming Interface used as a pathway for the user and other computers/programs to communicate and interact with each other.
T or F? A car is an example of Data Abstraction.
T
Other than Camel/SnakeCase, what are the rules for naming a variable? (List 3)
All possible answers are
1. Variable names are never in quotation marks even if they are words
2. Always starts with lowercase
3. Must start with a letter
4. Variable can never have spaces
What is a substring?
A subset or part of another string or a contiguous sequence of characters within a string. (part of an existing string)
How are binary searches and linear searches different?
While a linear search can look through any type of list by examining each value 1 by 1, a binary search can only be used on sorted lists and splits the list in half until it reaches the target value. Binary lists may be faster but face the constraint of only working on sorted lists.