Such an array of blocks corresponds to an array of values. For example, M[I,J]- 1 may correspond to an open (unoccupied) block and MIIJ] = 0 to a closed (occupied) block. The maze of Figure H.1 is then represented by: M 1 2 3 45 6 7 8 0 0 0 1 0 0 0 0 20 11 10 0 10 10 10 0 1 4 0 10 1 1 1 1 1 0 0 0 0 1 1 6. 10 1 1 1 0 0 1 0 0 0 8 0 0 0 0 1 0 0 0 While searching such a table for a passageway from an entrance position (R,C) to an exit position, it is convenient to mark positions (I) alrea another exit can be designed around a stack of positions: Push (R,C) and set M[R,C] to 2. The pair (R.C) is the current position. repeat 1. Test the four positions adjacent to (R,C) (on the North, East, South, and West). For a position (1.) for which M[IJ] = 1, push (1.) and set M 2. (R,C) + TopValue until (R,C) is a border position. If the final (R.C) is the initial entrance pair, then the maze has no other exit because all branch-paths from all blocks accessible from the start b trace of the first few loop iterations for the example maze are: (R,C) STACK (1,4) (1,4) (1,4) (1,4) (2,4) (2,4) (1,4) (2,4) (3,4) (2,3) (2,3) (1,4) (2,4) (3,4) (2,3) (2,2)
Such an array of blocks corresponds to an array of values. For example, M[I,J]- 1 may correspond to an open (unoccupied) block and MIIJ] = 0 to a closed (occupied) block. The maze of Figure H.1 is then represented by: M 1 2 3 45 6 7 8 0 0 0 1 0 0 0 0 20 11 10 0 10 10 10 0 1 4 0 10 1 1 1 1 1 0 0 0 0 1 1 6. 10 1 1 1 0 0 1 0 0 0 8 0 0 0 0 1 0 0 0 While searching such a table for a passageway from an entrance position (R,C) to an exit position, it is convenient to mark positions (I) alrea another exit can be designed around a stack of positions: Push (R,C) and set M[R,C] to 2. The pair (R.C) is the current position. repeat 1. Test the four positions adjacent to (R,C) (on the North, East, South, and West). For a position (1.) for which M[IJ] = 1, push (1.) and set M 2. (R,C) + TopValue until (R,C) is a border position. If the final (R.C) is the initial entrance pair, then the maze has no other exit because all branch-paths from all blocks accessible from the start b trace of the first few loop iterations for the example maze are: (R,C) STACK (1,4) (1,4) (1,4) (1,4) (2,4) (2,4) (1,4) (2,4) (3,4) (2,3) (2,3) (1,4) (2,4) (3,4) (2,3) (2,2)
Computer Networking: A Top-Down Approach (7th Edition)
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Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
rat in maze with stack.
IN C LANGUAGE.
PLS CODED.
![Güvenli Değil – icodeguru.com
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(AS 5.11. Exploring a Maze – Problem Solving with Algorith...
* Başlangıç Sayfası
Data Structures: SECTION H: FOLLOWING A MAZE
Figure H.1
Such an array of blocks corresponds to an array of values. For example,
M[I,J]
= 1
may correspond to an open (unoccupied) block and M[I,J] = 0 to a closed (occupied) block. The maze of Figure H.1 is then represented by:
M
1
4
5
6 7 8
1
1
1
1
1
1
3
1
1
1 0
4
1
1
1
1
1
5
1
1
1
1
1
1
7
0 0 0
1
8
1
While searching such a table for a passageway from an entrance position (R,C) to an exit position, it is convenient to mark positions (I,J) already visited by the assignment M[I,J] + 2. An algorithm that searches the table form of the maze for passageways from an entrance to
another exit can be designed around a stack of positions:
Push (R,C) and set M[R,C] to 2. The pair (R,C) is the current position.
repeat
1. Test the four positions adjacent to (R,C) (on the North, East, South, and West). For a position (I,J) for which M[I,J] = 1, push (I,J) and set M[I,J] to 2. If no adjacent position is open, then delete (I,J) and set M[R,C] to 0 to indicate that the current position leads nowhere.
2. (R,C) + TopValue
until (R,C) is a border position.
If the final (R,C) is the initial entrance pair, then the maze has no other exit because all branch-paths from all blocks accessible from the start block have been tried. The contents of the stack define a path from entrance to exit. If adjacent positions are tested in clockwise order, a
trace of the first few loop iterations for the example maze are:
(R,C)
STACK
(1,4)
(1,4)
(1,4)
(1,4) (2,4)
(2,4)
(1,4) (2,4) (3,4) (2,3)
(2,3)
(1,4) (2,4) (3,4) (2,3) (2,2)
(2,2)
(1,4) (2.4) (3,4) (2,3) (2,2) (3,2)
(3,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2)
(4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2)
(5,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2)
( 4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2) (6,3)
(4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F18659bcc-bef2-4c45-81b5-23ab37edba75%2Fc8df4c01-6e83-426b-8604-24aeb122db19%2Fn3vc7o_processed.png&w=3840&q=75)
Transcribed Image Text:Güvenli Değil – icodeguru.com
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(AS 5.11. Exploring a Maze – Problem Solving with Algorith...
* Başlangıç Sayfası
Data Structures: SECTION H: FOLLOWING A MAZE
Figure H.1
Such an array of blocks corresponds to an array of values. For example,
M[I,J]
= 1
may correspond to an open (unoccupied) block and M[I,J] = 0 to a closed (occupied) block. The maze of Figure H.1 is then represented by:
M
1
4
5
6 7 8
1
1
1
1
1
1
3
1
1
1 0
4
1
1
1
1
1
5
1
1
1
1
1
1
7
0 0 0
1
8
1
While searching such a table for a passageway from an entrance position (R,C) to an exit position, it is convenient to mark positions (I,J) already visited by the assignment M[I,J] + 2. An algorithm that searches the table form of the maze for passageways from an entrance to
another exit can be designed around a stack of positions:
Push (R,C) and set M[R,C] to 2. The pair (R,C) is the current position.
repeat
1. Test the four positions adjacent to (R,C) (on the North, East, South, and West). For a position (I,J) for which M[I,J] = 1, push (I,J) and set M[I,J] to 2. If no adjacent position is open, then delete (I,J) and set M[R,C] to 0 to indicate that the current position leads nowhere.
2. (R,C) + TopValue
until (R,C) is a border position.
If the final (R,C) is the initial entrance pair, then the maze has no other exit because all branch-paths from all blocks accessible from the start block have been tried. The contents of the stack define a path from entrance to exit. If adjacent positions are tested in clockwise order, a
trace of the first few loop iterations for the example maze are:
(R,C)
STACK
(1,4)
(1,4)
(1,4)
(1,4) (2,4)
(2,4)
(1,4) (2,4) (3,4) (2,3)
(2,3)
(1,4) (2,4) (3,4) (2,3) (2,2)
(2,2)
(1,4) (2.4) (3,4) (2,3) (2,2) (3,2)
(3,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2)
(4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2)
(5,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2)
( 4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2) (6,3)
(4,2)
(1,4) (2,4) (3,4) (2,3) (2,2) (3,2) (4,2) (5,2) (6,2)
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