Three Types of Depth-First Search Alyce Brady CS 470: Data Structures CS 510: Computer Algorithms.

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Presentation transcript:

Three Types of Depth-First Search Alyce Brady CS 470: Data Structures CS 510: Computer Algorithms

Pre-order Traversal: Root - Left Child - Right Child Depth-First Search

Pre-order Traversal: Root - Left Child - Right Child A BC DEFG HIJKLMNO

A BC DEFG HIJKLMNO A A

A BC DEFG HIJKLMNO A A

A BC DEFG HIJKLMNO A B

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N O

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N O

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N O

A BC DEFG HIJKLMNO Pre-order Traversal: Root - Left Child - Right Child A B D H I E J K C F L M G N O

Pre-order Traversal: Root - Left Child - Right Child A BC DEFG HIJKLMNO A B D H I E J K C F L M G N O

Pseudo-Code for Pre-order Traversal pre-traverse visit current node e.g., print value pre-traverse left subtree pre-traverse right subtree

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