Create Decode the Message.java

varunu28 · web-flow · commit 45442bb1411d · 2022-07-03T20:52:55.000-07:00
diff --git a/Easy/Decode the Message.java b/Easy/Decode the Message.java
@@ -0,0 +1,16 @@
+class Solution {
+  public String decodeMessage(String key, String message) {
+    int counter = 0;
+    Map<Character, Character> map = new HashMap<>();
+    for (char c : key.toCharArray()) {
+      if (!map.containsKey(c) && c != ' ') {
+        map.put(c, (char) ('a' + counter++));
+      }
+    }
+    StringBuilder sb = new StringBuilder();
+    for (char c : message.toCharArray()) {
+      sb.append(c == ' ' ? ' ' : map.get(c));
+    }
+    return sb.toString();
+  }
+}
