September 2017 Update

Task/Sorting-algorithms-Counting-sort/Jq/sorting-algorithms-counting-sort-1.jq

@@ -0,0 +1,15 @@
+def countingSort(min; max):
+  . as $in
+  | reduce range(0;length) as $i
+      ( {};
+        ($in[$i]|tostring) as $s | .[$s] += 1 # courtesy of the fact that in jq, (null+1) is 1
+      )
+  | . as $hash
+  # now construct the answer:
+  | reduce range(min; max+1) as $i
+      ( [];
+        ($i|tostring) as $s
+        | if $hash[$s] == null then .
+          else reduce range(0; $hash[$s]) as $j (.; . + [$i])
+          end
+      );

Task/Sorting-algorithms-Counting-sort/Jq/sorting-algorithms-counting-sort-2.jq

@@ -0,0 +1 @@
+ [1,2,1,4,0,10] | countingSort(0;10)

Task/Sorting-algorithms-Counting-sort/Jq/sorting-algorithms-counting-sort-3.jq

@@ -0,0 +1,2 @@
+$ jq -M -c -n -f counting_sort.jq
+[0,1,1,2,4,10]