Update (#205)IsomorphicStrings/IsomorphicStrings.java

Author: FeiCoding

(#205)IsomorphicStrings/IsomorphicStrings.java

@@ -0,0 +1,21 @@
+class Solution {
+    public boolean isIsomorphic(String s, String t) {
+        if(s.length() != t.length()) return false;
+        char sc[] = s.toCharArray();
+        char tc[] = t.toCharArray();
+        Map<Character, Character> map = new HashMap<Character, Character>();
+        for(int i = 0; i < sc.length; i++){
+            if(map.containsKey(sc[i])){
+                if(map.get(sc[i]) != tc[i])
+                    return false;
+                else continue;
+            }
+            else{
+                if(map.containsValue(tc[i]))
+                    return false;
+                else map.put(sc[i], tc[i]);
+            }
+        }
+        return true;
+    }
+}