4 files changed, 82 insertions, 0 deletions
diff --git a/challenge-280/barroff/julia/ch-1.jl b/challenge-280/barroff/julia/ch-1.jl
new file mode 100644
index 0000000000..056e092cc3
--- /dev/null
+++ b/challenge-280/barroff/julia/ch-1.jl
@@ -0,0 +1,19 @@
+#!/usr/bin/env julia
+
+using Test: @test, @testset
+
+function twice_appearance(str::AbstractString)::Char
+    str_set = Set{Char}()
+    for c in str
+        if in(c, str_set)
+            return c
+        end
+        push!(str_set, c)
+    end
+end
+
+@testset "twice appearance" begin
+    @test twice_appearance("acbddbca") == 'd'
+    @test twice_appearance("abccd") == 'c'
+    @test twice_appearance("abcdabbb") == 'a'
+end
diff --git a/challenge-280/barroff/julia/ch-2.jl b/challenge-280/barroff/julia/ch-2.jl
new file mode 100644
index 0000000000..f1115fdc28
--- /dev/null
+++ b/challenge-280/barroff/julia/ch-2.jl
@@ -0,0 +1,14 @@
+#!/usr/bin/env julia
+
+using Test: @test, @testset
+
+function count_asterisks(str::AbstractString)::Int
+    pairless = replace(str, r"\|.*?\|" => "")
+    count(x -> x == '*', pairless)
+end
+
+@testset "count asterisks" begin
+    @test count_asterisks("p|*e*rl|w**e|*ekly|") == 2
+    @test count_asterisks("perl") == 0
+    @test count_asterisks("th|ewe|e**|k|l***ych|alleng|e") == 5
+end
diff --git a/challenge-280/barroff/raku/ch-1.p6 b/challenge-280/barroff/raku/ch-1.p6
new file mode 100644
index 0000000000..5c9bb77311
--- /dev/null
+++ b/challenge-280/barroff/raku/ch-1.p6
@@ -0,0 +1,24 @@
+#!/usr/bin/env raku
+
+use v6.d;
+
+sub twice-appearance(Str $str --> Str) {
+    my %key-dict;
+    my $res = map({ %key-dict{$_} ?? return $_ !! %key-dict{$_} = 1 }, $str.comb);
+    dd $res;
+}
+
+#| Run test cases
+multi sub MAIN('test') {
+    use Test;
+    plan 3;
+
+    is twice-appearance("acbddbca"), "d", 'works for "acbddbca"';
+    is twice-appearance("abccd"), "c", 'works for "abccd"';
+    is twice-appearance("abcdabbb"), "a", 'works for "abcdabbb"';
+}
+
+#| Take user provided string like "bcdabbb"
+multi sub MAIN(Str $str where $str ~ /^<[a..z]>$/) {
+    say twice-appearance($str);
+}
diff --git a/challenge-280/barroff/raku/ch-2.p6 b/challenge-280/barroff/raku/ch-2.p6
new file mode 100644
index 0000000000..c6b255b0f6
--- /dev/null
+++ b/challenge-280/barroff/raku/ch-2.p6
@@ -0,0 +1,25 @@
+#!/usr/bin/env raku
+
+use v6.d;
+
+sub count-asterisks(Str $str --> Int) {
+    my $pairless = $str.subst(/\|.*?\|/, :g);
+    grep({ $_ eq '*' }, $pairless.comb).elems;
+}
+
+#| Run test cases
+multi sub MAIN('test') {
+    use Test;
+    plan 3;
+
+    is count-asterisks("p|*e*rl|w**e|*ekly|"), 2,
+        'works for "p|*e*rl|w**e|*ekly|"';
+    is count-asterisks("perl"), 0, 'works for "perl"';
+    is count-asterisks("th|ewe|e**|k|l***ych|alleng|e"), 5,
+        'works for "th|ewe|e**|k|l***ych|alleng|e"';
+}
+
+#| Take user provided number like "Perl Weekly Challenge" l a
+multi sub MAIN(Str $str) {
+    say count-asterisks($str);
+}