提交 290 单词规律

yllg · yllg · commit 6c0406cd6725 · 2020-03-10T20:42:55.000+08:00
diff --git a/290.单词规律/solution.html b/290.单词规律/solution.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+<script>
+// Source : https://leetcode.com/problems/word-pattern/
+// Author : 悬笔e绝
+// Date   : 2020-03-10
+
+/**
+ * @param {string} pattern
+ * @param {string} str
+ * @return {boolean}
+ */
+var wordPattern = function(pattern, str) {
+  var arr = str.split(' ');
+  if (pattern.length !== arr.length)
+    return false;
+
+  var a2b = {}
+    , b2a = {};
+
+  for (var i = 0, len = pattern.length; i < len; i++) {
+    var a = pattern[i]
+      , b = arr[i];
+    if (!a2b[a]) {
+      a2b[a] = b;
+    } else {
+      if (a2b[a] !== b)
+        return false;
+    }
+    if (!b2a[b]) {
+      b2a[b] = a;
+    } else {
+      if (b2a[b] !== a)
+        return false;
+    }
+  }
+  return true;
+};
+</script>
+</body>
+</html>
