Data update

Task/String-matching/Elixir/string-matching.ex

@@ -0,0 +1,28 @@
+s1 = "abcd"
+s2 = "adab"
+s3 = "ab"
+
+String.starts_with?(s1, s3)
+# => true
+String.starts_with?(s2, s3)
+# => false
+
+String.contains?(s1, s3)
+# => true
+String.contains?(s2, s3)
+# => true
+
+String.ends_with?(s1, s3)
+# => false
+String.ends_with?(s2, s3)
+# => true
+
+
+# Optional requirements:
+Regex.run(~r/#{s3}/, s1, return: :index)
+# => [{0, 2}]
+Regex.run(~r/#{s3}/, s2, return: :index)
+# => [{2, 2}]
+
+Regex.scan(~r/#{s3}/, "abcabc", return: :index)
+# => [[{0, 2}], [{3, 2}]]