diff --git "a/0510/Programmers/Lv1/\354\227\206\353\212\224\354\210\253\354\236\220\353\215\224\355\225\230\352\270\260_kim.java" "b/0510/Programmers/Lv1/\354\227\206\353\212\224\354\210\253\354\236\220\353\215\224\355\225\230\352\270\260_kim.java"
new file mode 100644
index 0000000..004ddcf
--- /dev/null
+++ "b/0510/Programmers/Lv1/\354\227\206\353\212\224\354\210\253\354\236\220\353\215\224\355\225\230\352\270\260_kim.java"
@@ -0,0 +1,12 @@
+
+public class 없는숫자더하기_kim {
+	public static void main(String[] args) {
+		int[] numbers = {5,8,4,0,6,7,9};
+		int sum = 45;
+		for(int i = 0; i < numbers.length; i++) {
+			sum -= numbers[i];
+		}
+		System.out.println(sum);
+	}
+
+}
diff --git "a/0510/Programmers/Lv2/\354\225\225\354\266\225_kim.java" "b/0510/Programmers/Lv2/\354\225\225\354\266\225_kim.java"
new file mode 100644
index 0000000..1664d07
--- /dev/null
+++ "b/0510/Programmers/Lv2/\354\225\225\354\266\225_kim.java"
@@ -0,0 +1,51 @@
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+public class 압축_kim {
+	public static void main(String[] args) {
+		String msg = "ABABABABABABABAB";
+		Map<String, Integer> map = new HashMap<>();
+		List<Integer> list = new LinkedList<>();
+		String[] alphabet = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
+				"S", "T", "U", "V", "W", "X", "Y", "Z" };
+		int top = 26;
+		for(int i = 0; i < alphabet.length; i++) {
+			map.put(alphabet[i], i+1);
+		}
+		int now = 0;
+		int next = 0;
+		bye: for(int i = 0; i < msg.length(); i++) {
+			now = i;
+			next = i;
+			int count = 0;
+			out: while(true) {
+				if(next+1 <= msg.length()) {
+					next += 1;
+					count++;
+					String check = msg.substring(now, next);
+					if(!map.containsKey(check)) {
+						map.put(check, ++top);
+						list.add(map.get(msg.substring(now,next-1)));
+						break out;
+					}
+				}else {
+					list.add(map.get(msg.substring(now,next)));
+					break bye;
+				}
+				
+			}		
+			if(i != msg.length()-1) {
+				i += (count-2);
+			}			
+		}
+		int[] ans = new int[list.size()];
+		for(int i = 0; i < list.size(); i++) {
+			ans[i] = list.get(i);
+		}
+		System.out.println(Arrays.toString(ans));		
+	}
+}