diff --git "a/yujin-level0/Week23/\354\244\221\354\225\231\352\260\222_\352\265\254\355\225\230\352\270\260.js" "b/yujin-level0/Week23/\354\244\221\354\225\231\352\260\222_\352\265\254\355\225\230\352\270\260.js"
new file mode 100644
index 0000000..2cc43f7
--- /dev/null
+++ "b/yujin-level0/Week23/\354\244\221\354\225\231\352\260\222_\352\265\254\355\225\230\352\270\260.js"
@@ -0,0 +1,15 @@
+function solution(array) {
+  // 배열 길이 중 중앙값 (중간 index) 찾기
+  const mid_num = Math.floor(array.length / 2);
+
+  // 오름차순으로 정렬하기 - sort() 메서드 사용
+  const asc_array = array.sort((a, b) => a - b);
+
+  // 오름차순된 새로운 배열 중 중간 index 반환하기
+  return asc_array[mid_num];
+}
+
+// 다른 풀이
+// function solution(array) {
+//   return array.sort((a, b) => a - b)[Math.floor(array.length / 2)];
+// }
diff --git "a/yujin-level0/Week23/\354\247\235\354\210\230\353\212\224_\354\213\253\354\226\264\354\232\224.js" "b/yujin-level0/Week23/\354\247\235\354\210\230\353\212\224_\354\213\253\354\226\264\354\232\224.js"
new file mode 100644
index 0000000..7572ce8
--- /dev/null
+++ "b/yujin-level0/Week23/\354\247\235\354\210\230\353\212\224_\354\213\253\354\226\264\354\232\224.js"
@@ -0,0 +1,18 @@
+function solution(n) {
+  var answer = [];
+
+  for (let i = 1; i <= n; i++) {
+    if (i % 2 != 0) {
+      answer.push(i);
+    }
+  }
+
+  return answer;
+}
+
+// 다른 풀이
+// function solution(n) {
+//     var answer = [];
+//     for (let i = 1; i<=n; i+=2) answer.push(i)
+//     return answer;
+// }
diff --git "a/yujin-level0/Week24/\352\260\234\353\257\270_\352\265\260\353\213\250.js" "b/yujin-level0/Week24/\352\260\234\353\257\270_\352\265\260\353\213\250.js"
new file mode 100644
index 0000000..4177730
--- /dev/null
+++ "b/yujin-level0/Week24/\352\260\234\353\257\270_\352\265\260\353\213\250.js"
@@ -0,0 +1,11 @@
+function solution(hp) {
+  const first = Math.floor(hp / 5);
+  const second = Math.floor((hp - first * 5) / 3);
+  const third = hp - first * 5 - second * 3;
+  return first + second + third;
+}
+
+// 다른 풀이
+// function solution(hp) {
+//     return Math.floor(hp/5)+Math.floor((hp%5)/3)+(hp%5)%3;
+// }
diff --git "a/yujin-level0/Week24/\354\233\203\352\270\260\352\262\214_\355\225\240\354\235\270_\353\260\233\352\270\260.js" "b/yujin-level0/Week24/\354\233\203\352\270\260\352\262\214_\355\225\240\354\235\270_\353\260\233\352\270\260.js"
new file mode 100644
index 0000000..c138b78
--- /dev/null
+++ "b/yujin-level0/Week24/\354\233\203\352\270\260\352\262\214_\355\225\240\354\235\270_\353\260\233\352\270\260.js"
@@ -0,0 +1,15 @@
+function solution(price) {
+  if (price >= 500000) {
+    return Math.floor(price * 0.8);
+  } else if (price >= 300000) {
+    return Math.floor(price * 0.9);
+  } else if (price >= 100000) {
+    return Math.floor(price * 0.95);
+  } else return price;
+}
+
+// 다른 풀이
+// function solution(price) {
+//     price = price>=500000?price*0.8:price>=300000?price*0.9:price>=100000?price*0.95:price;
+//     return ~~(price);
+// }
diff --git "a/yujin-level0/Week25/\352\260\200\354\234\204 \353\260\224\354\234\204 \353\263\264.js" "b/yujin-level0/Week25/\352\260\200\354\234\204 \353\260\224\354\234\204 \353\263\264.js"
new file mode 100644
index 0000000..b6b8567
--- /dev/null
+++ "b/yujin-level0/Week25/\352\260\200\354\234\204 \353\260\224\354\234\204 \353\263\264.js"	
@@ -0,0 +1,27 @@
+function solution(rsp) {
+  let result = "";
+  for (let i = 0; i < rsp.length; i++) {
+    if (rsp[i] === "2") {
+      result += "0";
+    } else if (rsp[i] === "0") {
+      result += "5";
+    } else if (rsp[i] === "5") {
+      result += "2";
+    }
+  }
+  return result;
+}
+
+// 다른 풀이
+/*
+ 가위는 2 바위는 0 보는 5
+*/
+// function solution(rsp) {
+//     let arr = {
+//         2: 0,
+//         0: 5,
+//         5: 2
+//     };
+//     var answer = [...rsp].map(v => arr[v]).join("");
+//     return answer;
+// }
diff --git "a/yujin-level0/Week25/\354\243\274\354\202\254\354\234\204\354\235\230 \352\260\234\354\210\230.js" "b/yujin-level0/Week25/\354\243\274\354\202\254\354\234\204\354\235\230 \352\260\234\354\210\230.js"
new file mode 100644
index 0000000..cb53c96
--- /dev/null
+++ "b/yujin-level0/Week25/\354\243\274\354\202\254\354\234\204\354\235\230 \352\260\234\354\210\230.js"	
@@ -0,0 +1,15 @@
+function solution(box, n) {
+  return parseInt(box[0] / n) * parseInt(box[1] / n) * parseInt(box[2] / n);
+}
+
+// 다른 풀이
+// function solution(box, n) {
+//     let [width, length, height] = box;
+
+//     return Math.floor(width / n) * Math.floor(length / n) * Math.floor(height / n);
+// }
+
+// 다른 풀이 2
+// function solution(box, n) {
+//     return box.reduce((acc,v) => acc * Math.floor(v / n), 1);
+// }