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Unit 4 of 4 · 324 min

Unit 4: Data Collections

Arrays, ArrayList, 2D arrays, text files, searching, sorting and recursion: storing and processing many values.

Read the whole unitAll 17 topics' notes on one page, like printed study notes.

4.1

Ethical and Social Issues Around Data Collection

12 min · 5 questions
4.2

Introduction to Using Data Sets

10 min · 5 questions
4.3

Array Creation and Access

18 min · 5 questions
4.4

Array Traversals

20 min · 5 questions
4.5

Implementing Array Algorithms

25 min · 6 questions
4.6

Using Text Files

25 min · 5 questions
4.7

Wrapper Classes

15 min · 5 questions
4.8

ArrayList Methods

22 min · 5 questions
4.9

ArrayList Traversals

22 min · 5 questions
4.10

Implementing ArrayList Algorithms

20 min · 5 questions
4.11

2D Array Creation and Access

15 min · 4 questions
4.12

2D Array Traversals

15 min · 4 questions
4.13

Implementing 2D Array Algorithms

20 min · 5 questions
4.14

Searching Algorithms

15 min · 4 questions
4.15

Sorting Algorithms

25 min · 5 questions
4.16

Recursion

20 min · 5 questions
4.17

Recursive Searching and Sorting

25 min · 6 questions

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