--fix: moved fail case at top

Author: ashokdey

src/Searching/BinarySearch/index.js

@@ -23,14 +23,14 @@ function binarySearch(arr, key) {
 function binarySearchRecursive(arr, low, high, key) {
   const mid = Math.floor((high - low) / 2 + low);
 
-  if (high < low) {
+  if (high <= low && arr[mid] !== key) {
     return null;
+  } else if (key === arr[mid]) {
+    return mid;
   } else if (key < arr[mid]) {
     return binarySearchRecursive(arr, low, mid - 1, key);
   } else if (key > arr[mid]) {
     return binarySearchRecursive(arr, mid + 1, high, key);
-  } else if (key === arr[mid]) {
-    return mid;
   }
 
   return null;