Problem 1903. GJam 2014 China Rd A: Maze with a Left Hand Rule

Created by Richard Zapor

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>This Challenge is derived from</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://code.google.com/codejam/contest/2924486/dashboard#s=p3\"><w:r><w:t>GJam 2014 China Cross the Maze</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The Goal is to minimally traverse a Maze from a Starting Point to Finish Point in less than 10,000 moves where the Bot can only go forward and must maintain its Left Arm in contact with a wall. At the Start Point the Bot can only touch NSEW. After the first move the Bot maintains contact on diagonals. Rotations in a cul-de-sac or turning are not counted as moves.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Input:</w:t></w:r><w:r><w:t> [M, Start_Finish] where M is an NxN (0,1=Wall) array and Start_Finish is [Sr,Sc,Fr,Fc]</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Output:</w:t></w:r><w:r><w:t> Path, a string of Movements {N,S,E,W}. If Path is &gt;10,000 moves or No solution return a null string.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Examples:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[.##.#\n.....\n...#.\n.###.\n...#.\n1 1 5 3]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Note: (1,1) is Top Left and start point for this case.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The # are replaced by 1s and '.' will be 0s.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Output: SEEENSESSSNNNWWSWWSSEE</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Contest Performance:</w:t></w:r><w:r><w:t> Best Delta Time of 17 minutes with only 134 correct solutions in 3 hours.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

This Challenge is derived from <a href = "http://code.google.com/codejam/contest/2924486/dashboard#s=p3">GJam 2014 China Cross the Maze</a>.The Goal is to minimally traverse a Maze from a Starting Point to Finish Point in less than 10,000 moves where the Bot can only go forward and must maintain its Left Arm in contact with a wall. At the Start Point the Bot can only touch NSEW. After the first move the Bot maintains contact on diagonals. Rotations in a cul-de-sac or turning are not counted as moves.Input: [M, Start_Finish] where M is an NxN (0,1=Wall) array and Start_Finish is [Sr,Sc,Fr,Fc]Output: Path, a string of Movements {N,S,E,W}. If Path is >10,000 moves or No solution return a null string.Examples:<pre class="language-matlab">.##.#
.....
...#.
.###.
...#.
1 1 5 3
</pre>Note: (1,1) is Top Left and start point for this case.The # are replaced by 1s and '.' will be 0s.Output: SEEENSESSSNNNWWSWWSSEEContest Performance: Best Delta Time of 17 minutes with only 134 correct solutions in 3 hours.

Solve

Solution Stats

9 Solutions
4 Solvers

Last Solution submitted on Dec 08, 2018

Last 200 Solutions

Problem Comments

Problem Recent Solvers4

Problem Tags

Problem 1903. GJam 2014 China Rd A: Maze with a Left Hand Rule

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers4

Suggested Problems

More from this Author237

Problem Tags

Problem 1903. GJam 2014 China Rd A: Maze with a Left Hand Rule

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers4

Suggested Problems

More from this Author237

Problem Tags

Players