From 35cef449575d8dc586ca8d55803836a0de720a90 Mon Sep 17 00:00:00 2001
From: Jörg Sommrey <28217714+jo-37@users.noreply.github.com>
Date: Fri, 17 Mar 2023 19:24:19 +0100
Subject: Challenge 024 task 2

---
 challenge-024/jo-37/perl/ch-2.pl | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 challenge-024/jo-37/perl/ch-2.pl

diff --git a/challenge-024/jo-37/perl/ch-2.pl b/challenge-024/jo-37/perl/ch-2.pl
new file mode 100755
index 0000000000..7b4a70c7fb
--- /dev/null
+++ b/challenge-024/jo-37/perl/ch-2.pl
@@ -0,0 +1,20 @@
+#!/usr/bin/perl
+
+use v5.16;
+use warnings;
+use Data::Dump;
+use experimental 'postderef';
+
+### Input and Output
+
+dd build_index(shift);
+
+
+### Implementation
+
+sub build_index {
+    my %index;
+    # Match words in the input string and record all starting positions.
+    () = shift =~ /(\w+)(?{push $index{$^N}->@*, pos() - length($^N)})/g;
+    \%index;
+}
-- 
cgit