Nested Loops

Nested Loops
A Programming Pattern

Prof. David Bernstein
James Madison University

Computer Science Department

bernstdh@jmu.edu

Nested Loops

An Observation:
- The statement (or block statement) that constitutes the body of the loop can contain a loop
Terminology:
- Such loops are said to be "nested"

Common Uses of Nested Loops

Creating:
- Prompting for valid input within another loop (this is not normally thought of as nested loops)
- To create a "table"
Calculating:
- To search for a value in a "table"
- "Generate and Test" algorithms (i.e., generate candidates and see if they satisfy a condition)

Creating a Table

An Example

javaexamples/programmingpatterns/AdditionTableExample.java

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