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Task/Top-rank-per-group/Sidef/top-rank-per-group.sidef

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+var data = <<'EOF'.lines.map{ (var h = Hash()){<name id salary dept>} = .split(',')...; h }
+Tyler Bennett,E10297,32000,D101
+John Rappl,E21437,47000,D050
+George Woltman,E00127,53500,D101
+Adam Smith,E63535,18000,D202
+Claire Buckman,E39876,27800,D202
+David McClellan,E04242,41500,D101
+Rich Holcomb,E01234,49500,D202
+Nathan Adams,E41298,21900,D050
+Richard Potter,E43128,15900,D101
+David Motsinger,E27002,19250,D202
+Tim Sampair,E03033,27000,D101
+Kim Arlich,E10001,57000,D190
+Timothy Grove,E16398,29900,D190
+EOF
+
+var n = (ARGV ? ARGV[0].to_i : "usage: #{__MAIN__} [n]\n".die);
+
+data.map {|h| h{:dept} }.uniq.sort.each { |d|
+    var es = data.grep { _{:dept} == d }.sort_by{ _{:salary}.to_num }.reverse;
+    say d;
+    n.times {
+        es || break;
+        var e = es.shift;
+        printf("%-15s | %-6s | %5d\n", e{%w(name id salary)});
+    }
+    print "\n";
+}