Solution to reverse string in Bash

bash/reverse-string/reverse_string.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+input=$1
+
+reversed=""
+length=${#input}
+
+for (( i=$length-1; i>=0; i-- )); do
+    # extract each character from input
+    # and append it to reversed 
+    reversed="${reversed}${input:$i:1}"
+done
+
+echo "$reversed"