2D Array

What Is a 2D Array? A two-dimensional array stores data in a grid of rows and columns . In Java it is really an array of arrays : each element of the outer array is itself a one-dimensional array (a row). On the AP CSA exam you only deal with rectangular 2D ar

8 lessons, each with runnable code in the browser.

1. Declaring and Initializing 2D Arrays
2. Row-Major Order and Dimensions
3. Nested Loops: Summing and Counting
4. Enhanced For Loops Over 2D Arrays
5. Working with Rows
6. Working with Columns
7. Grid Algorithms: Search and Position
8. Capstone: Transpose and Combined Algorithms

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