DATA MINING Desktop Survival Guide by Graham Williams
Desktop Survival Project Home Preface List of Figures List of Tables Process . Data Graphics in R Understanding Data Preparing Data Building Models Evaluating Models Algorithms Apriori Bagging Bayes Classifier Boosting Conditional Trees Decision Trees Hierarchical Clustering Kernel Methods K-Means K-Nearest Neighbours Linear Models Logistic Regression Neural Networks Support Vector Machines Text Mining Open Products Borgelt Data Mining Suite R Rattle Weka Closed Products C4.5 Clementine Enterprise Miner Equbits Foresight GhostMiner InductionEngine ODM Statistica Data Miner TreeNet Virtual Predict Appendicies Glossary Bibliography Index

Sudoku

Solve a sudoku puzzle with the sudoku package! Into a file place the following representation of a sudoku puzzle:

2--f-c-8----ab7-
e---a-6-f-03--d-
--305b-f--2496--
-7------b---5-f1
-------e9-d----6
-0fec-89-----1-b
6----532--7--9-8
-9--d--0----7a4-
-6dc----3--7--a-
7-0--e--46b----9
1-e-----5d-9fc3-
4----3-ae-------
93-1---c------e-
--72e4--8-6dbf--
-e--8a-3-1-5---c
-a45----7-9-8--0

Then:

> install.packages("sudoku")
> library(sudoku)
> library(help=sudoku)
> ?sudoku
> sudoku("sudoku.txt", map=c(0:9,letters))
2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
 [1,]    2    4    6    f    0    c    e    8    d     9     5     1     a
 [2,]    e    b    5    9    a    1    6    7    f     8     0     3     c
 [3,]    c    1    3    0    5    b    d    f    a     7     2     4     9
 [4,]    8    7    a    d    3    9    2    4    b     e     c     6     5
 [5,]    5    8    1    7    4    f    a    e    9     b     d     0     3
 [6,]    a    0    f    e    c    7    8    9    6     4     3     2     d
 [7,]    6    d    c    4    b    5    3    2    1     a     7     f     e
 [8,]    3    9    2    b    d    6    1    0    c     5     e     8     7
 [9,]    b    6    d    c    9    8    4    1    3     2     f     7     0
[10,]    7    5    0    3    f    e    c    d    4     6     b     a     1
[11,]    1    2    e    a    7    0    b    6    5     d     8     9     f
[12,]    4    f    9    8    2    3    5    a    e     0     1     c     6
[13,]    9    3    8    1    6    d    0    c    2     f     a     b     4
[14,]    0    c    7    2    e    4    9    5    8     3     6     d     b
[15,]    f    e    b    6    8    a    7    3    0     1     4     5     2
[16,]    d    a    4    5    1    2    f    b    7     c     9     e     8
      [,14] [,15] [,16]
 [1,]     b     7     3
 [2,]     4     d     2
 [3,]     6     8     e
 [4,]     0     f     1
 [5,]     2     c     6
 [6,]     1     5     b
 [7,]     9     0     8
 [8,]     a     4     f
 [9,]     e     a     5
[10,]     8     2     9
[11,]     c     3     4
[12,]     7     b     d
[13,]     5     e     7
[14,]     f     1     a
[15,]     d     9     c
[16,]     3     6     0

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