diff --git "a/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/Solution.java" "b/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/Solution.java"
index 0411734..f8b199f 100644
--- "a/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/Solution.java"	
+++ "b/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/Solution.java"	
@@ -1,13 +1,19 @@
+import java.util.Arrays;
+
 /*
  * 1. 하샤드 수 
  * https://programmers.co.kr/learn/courses/30/lessons/12947
  */
 class Solution {
+    public static void main(String[] args) {
+        Solution solution = new Solution();
+        int x = 19;
+        System.out.println(solution.solution(x));
+    }
 
-    public boolean solution(int x) {
-        return false;
+    public boolean solution(final int x) {
+        int sum = Arrays.asList(String.valueOf(x).split("")).stream().mapToInt(Integer::parseInt).sum();
+        return x % sum == 0 ? true : false;
     }
 
 }
-
-    
\ No newline at end of file
diff --git "a/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/solution.js" "b/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/solution.js"
new file mode 100644
index 0000000..d7b2d6c
--- /dev/null
+++ "b/week1/1. \355\225\230\354\203\244\353\223\234 \354\210\230/solution.js"	
@@ -0,0 +1,17 @@
+/*
+ * 1. 하샤드 수
+ * https://programmers.co.kr/learn/courses/30/lessons/12947
+ */
+class Solution {
+  static solution = function (x) {
+    const sum = String(x)
+      .split("")
+      .reduce((a, c) => {
+        return Number(a) + Number(c);
+      });
+
+    return x % sum == 0 ? true : false;
+  };
+}
+
+console.log(Solution.solution(24))
\ No newline at end of file