Encode and Decode Strings

Author: forest000014

encode-and-decode-strings/forest000014.java

@@ -0,0 +1,32 @@
+/*
+Time Complexity: O(n)
+Space Complexity: O(1)
+
+non-ASCII 유니코드 문자를 사용함
+
+To-Do : escaping 방법 학습하기
+*/
+public class Codec {
+
+    // Encodes a list of strings to a single string.
+    public String encode(List<String> strs) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < strs.size(); i++) {
+            if (i > 0) {
+                sb.append('\u2764');
+            }
+            sb.append(strs.get(i));
+        }
+
+        return sb.toString();
+    }
+
+    // Decodes a single string to a list of strings.
+    public List<String> decode(String s) {
+        return new ArrayList<>(Arrays.asList(s.split("\u2764")));
+    }
+}
+
+// Your Codec object will be instantiated and called as such:
+// Codec codec = new Codec();
+// codec.decode(codec.encode(strs));