A non-linear DS used to represent data containing a hierarchical relationship between elements
- A set of nodes storing elements in a parent-child relationship
- A data structure which consists of
a finite set of elements called nodes or vertices
a finite set of directed arcs which connect the...
Data Structure and
Algorithms
(Introduction to Trees)
UKZN
ENEL2DSH2
September 2016
,Broad classification
Broadly classified as linear or non-linear
• Linear DS
Arrays (Covered in lecture_4)
Linked list (Covered in lecture_5)
Stacks (Covered in lecture_6-1)
Queues (Covered partially in lecture_6-2)
Hash tables
• Non-linear DS
Trees (Lecture_7-1)
Graphs
,Turning a tree upside-
down tree
, Trees in data structure
Definition: - A non-linear DS used to represent data containing a
hierarchical relationship between elements
- A set of nodes storing elements in a parent-child relatio
- A data structure which consists of
• a finite set of elements called nodes or vertices
• a finite set of directed arcs which connect the nodes
If the tree is non-empty
• one of the nodes (the root) has no incoming arc, & does not hav
parent node
• every other node can be reached by following a unique sequenc
consecutive arcs & have a unique parent
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