5.1.14 -5.1.17 Binary trees

Stack and Queue (5.1.6, 5.1.7, 5.1.8)

5.1.4 - 5.1.5 2 dimensional arrays

Thinking recursively (5.1.1, 5.1.2, 5.1.3)

4.3.13 Construct algorithms using predefined sub-programmes, one-dimensional arrays and/or collections

4.3.12 Discuss the need for sub-programmes and collections within programmed solutions

4.3.11 Construct algorithms using the access methods of a collection