🐛 fix

Author: InnoFang

Data Structure/Search/Binary Search/main.js

@@ -1,9 +1,9 @@
 function binary_search(arr, target) {
-    let left = 0, right = arr.length
+    let left = 0, right = arr.length - 1
     while (left <= right) {
-        const mid = left + (right - left) / 2
+        let mid = left + (right - left) / 2
         if (arr[mid] == target) return mid
-        else if (arr[mid] > mid) right = mid - 1
+        else if (arr[mid] > target) right = mid - 1
         else left = mid + 1
     }
     return -1