diff --git a/1287.element-appearing-more-than-25%-in-sorted-array.js b/1287.element-appearing-more-than-25%-in-sorted-array.js
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+++ b/1287.element-appearing-more-than-25%-in-sorted-array.js
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+/**
+ * URL of this problem
+ * https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array/
+ */
+
+/**
+ * @param {number[]} arr
+ * @return {number}
+ */
+var findSpecialInteger = function (arr) {
+	const NumMap = new Map();
+
+	for (let i = 0; i < arr.length; i++) {
+		NumMap.set(arr[i], (NumMap.get(arr[i]) ?? 0) + 1);
+	}
+
+	for (const [key, value] of NumMap.entries()) {
+		if (`${value}` / arr.length > 0.25) return `${key}`;
+	}
+};