Data commit

Task/Range-expansion/UNIX-Shell/range-expansion.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/bash
+
+range_expand () (
+    IFS=,
+    set -- $1
+    n=$#
+    for element; do
+        if [[ $element =~ ^(-?[0-9]+)-(-?[0-9]+)$ ]]; then
+            set -- "$@" $(eval echo "{${BASH_REMATCH[1]}..${BASH_REMATCH[2]}}")
+        else
+            set -- "$@" $element
+        fi
+    done
+    shift $n
+    echo "$@"
+    # to return a comma-separated value: echo "${*// /,}"
+)
+
+range_expand "-6,-3--1,3-5,7-11,14,15,17-20"