diff --git a/lib/meta.js b/lib/meta.js
index a08ee57..6bf0f56 100644
--- a/lib/meta.js
+++ b/lib/meta.js
@@ -1,3 +1,4 @@
 module.exports = function (str) {
   // TODO
+  return /\.$/.test(str)
 }
\ No newline at end of file
diff --git a/lib/quantifier.js b/lib/quantifier.js
index a08ee57..23d3bd6 100644
--- a/lib/quantifier.js
+++ b/lib/quantifier.js
@@ -1,3 +1,5 @@
 module.exports = function (str) {
   // TODO
+  return /[^a-zA-Z]{0,}[0-9]\.jp(e)?g$/.test(str)
+   
 }
\ No newline at end of file
diff --git a/lib/split.js b/lib/split.js
index a08ee57..148a8ca 100644
--- a/lib/split.js
+++ b/lib/split.js
@@ -1,3 +1,6 @@
 module.exports = function (str) {
   // TODO
+  const clearStr = str.replace(/[\r\n\ ]/g, "")
+  const arr = clearStr.split(',')
+  return arr;
 }
\ No newline at end of file