September 2017 Update

Task/Josephus-problem/Friendly-interactive-shell/josephus-problem-1.fish

@@ -0,0 +1,19 @@
+function execute
+    # If the list is empty, don't do anything.
+    test (count $argv) -ge 2; or return
+    # If the list has only one element, return it
+    if test (count $argv) -eq 2
+        echo $argv[2]
+        return
+    end
+    # Rotate prisoners
+    for i in (seq 2 $argv[1])
+        set argv $argv[1 3..-1 2]
+    end
+    # Mention killed prisoner
+    echo $argv[2]
+    # Kill rest recursively
+    execute $argv[1 3..-1]
+end
+
+echo Prisoner (execute 3 (seq 0 40))[-1] survived.

Task/Josephus-problem/Friendly-interactive-shell/josephus-problem-2.fish

@@ -0,0 +1 @@
+echo Prisoners (execute 3 (seq 0 40))[-3..-1] survived.

Task/Josephus-problem/Friendly-interactive-shell/josephus-problem-3.fish

@@ -0,0 +1 @@
+echo Prisoner (execute 2 Joe Jack William Averell Rantanplan)[-1] survived.