Merge pull request neetcode-gh#2 from tharunkanna14/tharunkanna14-patch-2

Create 290-word-pattern

Author: tharunkanna14

java/290-word-pattern

@@ -0,0 +1,26 @@
+class Solution {
+    public boolean wordPattern(String pattern, String s) {
+        String[] sArray = s.split("\s");
+        if(sArray.length != pattern.length()) {
+            return false;
+        }
+        
+        HashMap<Character,String> charToWord = new HashMap<>();
+        HashMap<String,Character> wordToChar = new HashMap<>();
+        
+        for (int i = 0; i < pattern.length(); i++) {
+        
+            if(charToWord.containsKey(pattern.charAt(i)) && !charToWord.get(pattern.charAt(i)).equals(sArray[i])) {
+                return false;
+            }
+            
+            if(wordToChar.containsKey(sArray[i]) && !wordToChar.get(sArray[i]).equals(pattern.charAt(i))) {
+                return false;
+            }
+            
+            charToWord.put(pattern.charAt(i),sArray[i]);
+            wordToChar.put(sArray[i],pattern.charAt(i));
+        }
+        return true;    
+    }
+}