Create Solution.java

Author: Jerring

solution/0290.Word Pattern/Solution.java

@@ -0,0 +1,19 @@
+class Solution {
+    public boolean wordPattern(String pattern, String str) {
+        String[] split = str.split(" ");
+        if (pattern.length() != split.length) {
+            return false;
+        }
+        Map<Character, Integer> map1 = new HashMap<>();
+        Map<String, Integer> map2 = new HashMap<>();
+        for (int i = 0; i < pattern.length(); ++i) {
+            char c = pattern.charAt(i);
+            if (!map1.getOrDefault(c, -1).equals(map2.getOrDefault(split[i], -1))) {
+                return false;
+            }
+            map1.put(c, i);
+            map2.put(split[i], i);
+        }
+        return true;
+    }
+}