diff --git a/JinHaLim/Array/solution_1185.js b/JinHaLim/Array/solution_1185.js
new file mode 100644
index 0000000..893af69
--- /dev/null
+++ b/JinHaLim/Array/solution_1185.js
@@ -0,0 +1,12 @@
+/**
+ * @param {number} day
+ * @param {number} month
+ * @param {number} year
+ * @return {string}
+ */
+var dayOfTheWeek = function(day, month, year) {
+    const days = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
+    const date = new Date(year+'-'+month+'-'+day).getDay();
+    return days[date];
+};
+console.log(dayOfTheWeek(31,8,2019))
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diff --git a/JinHaLim/Array/solution_1287.js b/JinHaLim/Array/solution_1287.js
new file mode 100644
index 0000000..42773bf
--- /dev/null
+++ b/JinHaLim/Array/solution_1287.js
@@ -0,0 +1,20 @@
+/**
+ * @param {number[]} arr
+ * @return {number}
+ */
+var findSpecialInteger = function(arr) {
+    let arrMap = new Map();
+    for (let i = 0; i < arr.length; i++) {
+       if (arrMap.has(arr[i])) {
+           arrMap.set(arr[i],arrMap.get(arr[i])+1);
+       }
+       else{
+        arrMap.set(arr[i],1);
+       }
+       if (arrMap.get(arr[i]) > arr.length*0.25) {
+           return arr[i];
+       }
+    }
+    return null;
+};
+console.log(findSpecialInteger([1,2,2,6,6,6,6,7,10]))
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diff --git a/JinHaLim/Array/solution_1652.js b/JinHaLim/Array/solution_1652.js
new file mode 100644
index 0000000..1dba761
--- /dev/null
+++ b/JinHaLim/Array/solution_1652.js
@@ -0,0 +1,38 @@
+/**
+ * @param {number[]} code
+ * @param {number} k
+ * @return {number[]}
+ */
+var decrypt = function(code, k) {
+    let result = [];
+    if (k === 0) {
+        return new Array(code.length).fill(0);
+    }
+    else if(k > 0){
+        code.forEach((_,idx) => {
+            let sum = 0;
+            for (let i = 1; i <= k; i++) {
+                sum += code[(idx+i)%code.length];
+            }
+            result.push(sum);
+        });
+        return result;
+    }
+    else if(k < 0 ){
+        code.forEach((_,idx) => {
+            let sum = 0;
+            for (let i = 1; i <= Math.abs(k); i++) {
+                let index = (idx-i);
+                if (index < 0) {
+                    index += Math.ceil(Math.abs(idx - i)/code.length)*code.length;
+                }
+                sum += code[index];
+            }
+            result.push(sum);
+        });
+        return result;
+    }
+};
+console.log(decrypt([5,7,1,4],3))
+console.log(decrypt([2,4,9,3],-2))
+console.log(decrypt([10,5,7,7,3,2,10,3,6,9,1,6],-4))
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