Fix: Correct binary search high index to len -1

01_introduction_to_algorithms/c++/01_binary_search.cpp

@@ -4,7 +4,7 @@ using namespace std;
 void binarySearch(int data_array[], int element, int len)
 {
     int low = 0;
-    int high = len;
+    int high = len -1;
     while (low <= high)
     {
         int mid = (low + high)/2;