Added 704. Binary Search

Author: berkslv

javascript/704-Binary-Search.js

@@ -0,0 +1,27 @@
+/**
+ * @param {number[]} nums
+ * @param {number} target
+ * @return {number}
+ */
+var search = function (nums, target) {
+
+    let left = 0;
+    let right = nums.length - 1;
+
+    while (left <= right) {
+        let middle = Math.floor((left + right) / 2);
+
+        if (nums[middle] === target) {
+            return middle;
+        } else if (nums[middle] < target) {
+            left = middle + 1;
+        } else {
+            right = middle - 1;
+        }
+    }
+
+    return -1;
+};
+
+// Runtime: 98 ms, faster than 34.02% of JavaScript online submissions for Binary Search.
+// Memory Usage: 44.3 MB, less than 99.18% of JavaScript online submissions for Binary Search.