Ranking methods: Difference between revisions
Added Sidef
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Rank(5.0,List(Garry, Bernard, Barry))
Rank(7.0,List(Stephen))</pre>
=={{header|Sidef}}==
{{trans|Perl 6}}
<lang ruby>var scores = [
Pair(Solomon => 44),
Pair(Jason => 42),
Pair(Errol => 42),
Pair(Garry => 41),
Pair(Bernard => 41),
Pair(Barry => 41),
Pair(Stephen => 39),
]
func tiers(s) {
s.group_by { .value }.kv.sort.flip.map { .value.map{.key} }
}
func standard(s) {
var rank = 1
gather {
for players in tiers(s) {
take(Pair(rank, players))
rank += players.len
}
}
}
func modified(s) {
var rank = 0
gather {
for players in tiers(s) {
rank += players.len
take(Pair(rank, players))
}
}
}
func dense(s) {
tiers(s).map_kv { |k,v| Pair(k+1, v) }
}
func ordinal(s) {
s.map_kv { |k,v| Pair(k+1, v.key) }
}
func fractional(s) {
var rank = 1
gather {
for players in tiers(s) {
var beg = rank
var end = (rank += players.len)
take(Pair(sum(beg ..^ end) / players.len, players))
}
}
}
func display(r) {
say r.map {|a| '%3s : %s' % a... }.join("\n")
}
say "Standard:"; display( standard(scores))
say "\nModified:"; display( modified(scores))
say "\nDense:"; display( dense(scores))
say "\nOrdinal:"; display( ordinal(scores))
say "\nFractional:"; display(fractional(scores))</lang>
{{out}}
<pre>
Standard:
1 : ["Solomon"]
2 : ["Jason", "Errol"]
4 : ["Garry", "Bernard", "Barry"]
7 : ["Stephen"]
Modified:
1 : ["Solomon"]
3 : ["Jason", "Errol"]
6 : ["Garry", "Bernard", "Barry"]
7 : ["Stephen"]
Dense:
1 : ["Solomon"]
2 : ["Jason", "Errol"]
3 : ["Garry", "Bernard", "Barry"]
4 : ["Stephen"]
Ordinal:
1 : Solomon
2 : Jason
3 : Errol
4 : Garry
5 : Bernard
6 : Barry
7 : Stephen
Fractional:
1 : ["Solomon"]
2.5 : ["Jason", "Errol"]
5 : ["Garry", "Bernard", "Barry"]
7 : ["Stephen"]
</pre>
=={{header|Tcl}}==
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