Auxiliary function

Given a ranking, it computes the score matrix as defined by Emond and Mason (2002)

1 | ```
scorematrix(X)
``` |

`X` |
a ranking (must be a row vector or, better, a matrix with one row and M columns) |

the M by M score matrix

Antonio D'Ambrosio <antdambr@unina.it> and Sonia Amodio <sonia.amodio@unina.it>

Emond, E. J., & Mason, D. W. (2002). A new rank correlation coefficient with application to the consensus ranking problem. Journal of Multi-Criteria Decision Analysis, 11(1), 17-28.

1 2 3 4 5 | ```
Y = matrix(c(1,3,5,4,2),1,5)
SM=scorematrix(Y)
Z=c(1,2,4,3)
SM2=scorematrix(Z)
``` |

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