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

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Presentation on theme: "Three Types of Depth-First Search Alyce Brady CS 470: Data Structures CS 510: Computer Algorithms."— Presentation transcript:

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

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

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

4 A BC DEFG HIJKLMNO A A

5 A BC DEFG HIJKLMNO A A

6 A BC DEFG HIJKLMNO A B

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

38 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

39 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

40 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

41 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

42 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

43 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

44 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

45 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

46 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

47 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

48 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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