added optimal stopping code in cpp

Author: Harshit564

C++/optimal_stopping_problem.cpp

@@ -0,0 +1,48 @@
+#include <iostream> 
+#include <time.h> 
+#define e 2.71828 
+using namespace std; 
+ 
+int roundNo(float num) 
+{ 
+    return num < 0 ? num - 0.5 : num + 0.5; 
+} 
+void printBestCandidate(int candidate[], int n) 
+{
+    int sample_size = roundNo(n/e); 
+    cout << "\n\nSample size is " << sample_size << endl; 
+    int best = 0;  
+    for (int i = 1; i < sample_size; i++) 
+        if (candidate[i] > candidate[best]) 
+            best = i;  
+    for (int i = sample_size; i < n; i++) 
+        if (candidate[i] >= candidate[best]) { 
+            best = i; 
+            break; 
+        } 
+  
+    if (best >= sample_size) 
+        cout << endl << "Best candidate found is "
+            << best + 1 << " with talent " 
+            << candidate[best] << endl; 
+    else
+        cout << "Couldn't find a best candidate\n"; 
+} 
+  
+int main() 
+{ 
+int n = 8;  
+int candidate[n]; 
+srand(time(0));     
+    for (int i = 0; i < n; i++) 
+     candidate[i] = 1 + rand() % 8; 
+     cout << "Candidate : "; 
+     for (int i = 0; i < n; i++) 
+       cout << i + 1 << " "; 
+       cout << endl; 
+       cout << "  Talents : "; 
+       for (int i = 0; i < n; i++) 
+        cout << candidate[i] << " "; 
+      printBestCandidate(candidate, n); 
+  return 0; 
+}