--update: find product of elements

Author: ashokdey

src/Searching/BinarySearch/index.js

@@ -32,6 +32,4 @@ function binarySearchRecursive(arr, low, high, key) {
   } else if (key > arr[mid]) {
     return binarySearchRecursive(arr, mid + 1, high, key);
   }
-
-  return null;
 }

src/_Problems_/product-of-elements/index.js

@@ -0,0 +1,21 @@
+// An array such that each index has a product of all the numbers in the array except the number stored at that index.
+
+function findProduct(arr) {
+  let left = 1;
+  const result = [];
+
+  // multiply all the numbers to the left side
+  for (let el of arr) {
+    result.push(left);
+    left *= el;
+  }
+
+  let right = 1;
+
+  // multiply all the numbers to the right side
+  for (let i = arr.length - 1; i > 0; i -= 1) {
+    result[i] *= right;
+    right *= arr[i];
+  }
+  return result;
+}