From 9c8edca3b631ee8585ba8bb24fa414f07a5a46ba Mon Sep 17 00:00:00 2001
From: zerob13 <i@zerob13.com>
Date: Thu, 30 Aug 2018 18:46:05 +0800
Subject: [PATCH] add new js

---
 src/js/isomorphicStrings.js | 45 +++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/js/isomorphicStrings.js

diff --git a/src/js/isomorphicStrings.js b/src/js/isomorphicStrings.js
new file mode 100644
index 0000000..bcf7e23
--- /dev/null
+++ b/src/js/isomorphicStrings.js
@@ -0,0 +1,45 @@
+/**
+ * @param {string} s
+ * @param {string} t
+ * @return {boolean}
+ */
+var isIsomorphic = function(s, t) {
+  if (s.length <= 1 && t.length === s.length) {
+    return true;
+  }
+  if (s.length != t.length) {
+    return false;
+  }
+  var isOk = true
+  var hashMap = []
+  var hashMap2 = []
+  var i = 0
+  for (i = 0; i < s.length; i++) {
+    var ts = s[i].charCodeAt(0);
+    var tb = t[i].charCodeAt(0);
+    if (hashMap[ts] == undefined) {
+      if (hashMap2[tb] == undefined) {
+        hashMap[ts] = tb
+        hashMap2[tb] = 1
+      } else {
+        isOk = false;
+        break;
+      }
+      continue;
+    } else {
+      if (hashMap[ts] == tb) {
+        continue;
+      } else {
+        isOk = false;
+        break;
+      }
+    }
+  }
+  return isOk;
+};
+
+console.log(isIsomorphic('egg', 'add'))
+console.log(isIsomorphic('foo', 'bar'))
+console.log(isIsomorphic('paper', 'title'))
+console.log(isIsomorphic('ab', 'aa'))
+console.log(isIsomorphic('ab', 'ca'))