diff --git a/JinHaLim/Easy/solution_1528.js b/JinHaLim/Easy/solution_1528.js
new file mode 100644
index 0000000..8d10ec6
--- /dev/null
+++ b/JinHaLim/Easy/solution_1528.js
@@ -0,0 +1,17 @@
+/**
+ * @param {string} s
+ * @param {number[]} indices
+ * @return {string}
+ */
+var restoreString = function(s, indices) {
+    let map = new Map();
+    let string = '';
+    s.split('').forEach((v,i) => {
+        map.set(indices[i],v);
+    });
+    for (let i = 0; i < map.size; i++) {
+        string += map.get(i);
+    }
+    return string;
+};
+console.log(restoreString("codeleet",[4,5,6,7,0,2,1,3]))
\ No newline at end of file
diff --git a/JinHaLim/Easy/solution_1603.js b/JinHaLim/Easy/solution_1603.js
new file mode 100644
index 0000000..b49675b
--- /dev/null
+++ b/JinHaLim/Easy/solution_1603.js
@@ -0,0 +1,48 @@
+/**
+ * @param {number} big
+ * @param {number} medium
+ * @param {number} small
+ */
+var ParkingSystem = function(big, medium, small) {
+    this.big = big;
+    this.medium = medium;
+    this.small = small;
+    return this;
+};
+
+/** 
+ * @param {number} carType
+ * @return {boolean}
+ */
+ParkingSystem.prototype.addCar = function(carType) {
+    switch (carType) {
+        case 1: //큰
+            if (this.big > 0) {
+                this.big -= 1;
+                return true;
+            }
+            break;
+        case 2: //중간
+            if (this.medium > 0) {
+                this.medium -= 1;
+                return true;
+            }
+            break;
+        case 3: //작은
+            if (this.small > 0) {
+                this.small -= 1;
+                return true;
+            }
+            break;
+        default:
+            break;
+    }
+    return false;
+};
+
+/** 
+ * Your ParkingSystem object will be instantiated and called as such:
+ * var obj = new ParkingSystem(big, medium, small)
+ * var param_1 = obj.addCar(carType)
+ */
+console.log(new ParkingSystem(1,1,0))
diff --git a/JinHaLim/Easy/solution_771.js b/JinHaLim/Easy/solution_771.js
new file mode 100644
index 0000000..aa45cf8
--- /dev/null
+++ b/JinHaLim/Easy/solution_771.js
@@ -0,0 +1,15 @@
+/**
+ * @param {string} jewels
+ * @param {string} stones
+ * @return {number}
+ */
+var numJewelsInStones = function(jewels, stones) {
+    const jewelArr = jewels.split('');
+    return stones.split('').reduce((acc,curr) => {
+        if (jewelArr.includes(curr)) {
+            acc += 1;
+        }
+        return acc;
+    },0);
+};
+console.log(numJewelsInStones("aA","aAAbbbb"));
\ No newline at end of file