From 07f5bac517c10a30ab20f8d6f5f29afc6e2d0d3f Mon Sep 17 00:00:00 2001
From: yiw <yiw@vmware.com>
Date: Sat, 24 Nov 2018 14:35:28 +0800
Subject: [PATCH] complete exercise7

---
 lib/blink.js             | 4 ++--
 lib/capture.js           | 2 ++
 lib/capture_breakword.js | 2 ++
 lib/quantified_group.js  | 1 +
 lib/quotes.js            | 1 +
 5 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/blink.js b/lib/blink.js
index c391a9f..5724cc8 100644
--- a/lib/blink.js
+++ b/lib/blink.js
@@ -1,7 +1,7 @@
 var marked = require('marked')
 
 module.exports = function (str) {
-  var md = marked(str)
+  var md = marked(str);
   // TODO
-  return null
+  return md.replace(/@@(.*?)@@/g, `<blink>$1</blink>`);
 }
\ No newline at end of file
diff --git a/lib/capture.js b/lib/capture.js
index a08ee57..1770b34 100644
--- a/lib/capture.js
+++ b/lib/capture.js
@@ -1,3 +1,5 @@
 module.exports = function (str) {
   // TODO
+  const res = str.match(/\=(\d+)/);
+  return res ? res[1] : null;
 }
\ No newline at end of file
diff --git a/lib/capture_breakword.js b/lib/capture_breakword.js
index a08ee57..bb96b8d 100644
--- a/lib/capture_breakword.js
+++ b/lib/capture_breakword.js
@@ -1,3 +1,5 @@
 module.exports = function (str) {
   // TODO
+  const res = /\bx=(\d+)\b/.exec(str);
+  return res ? res[1] : null;
 }
\ No newline at end of file
diff --git a/lib/quantified_group.js b/lib/quantified_group.js
index a08ee57..6ebc363 100644
--- a/lib/quantified_group.js
+++ b/lib/quantified_group.js
@@ -1,3 +1,4 @@
 module.exports = function (str) {
   // TODO
+    return /^(0x[a-fA-F0-9]{2}\s*){8}$/.test(str);
 }
\ No newline at end of file
diff --git a/lib/quotes.js b/lib/quotes.js
index a08ee57..bc2e677 100644
--- a/lib/quotes.js
+++ b/lib/quotes.js
@@ -1,3 +1,4 @@
 module.exports = function (str) {
   // TODO
+  return str.match(/\".*?\"/g);
 }
\ No newline at end of file