diff options
Diffstat (limited to 'ee1301')
| -rw-r--r-- | ee1301/wk3/hw3_directory/strap012_HW3A.cpp | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/ee1301/wk3/hw3_directory/strap012_HW3A.cpp b/ee1301/wk3/hw3_directory/strap012_HW3A.cpp index 8d75294..e9701ff 100644 --- a/ee1301/wk3/hw3_directory/strap012_HW3A.cpp +++ b/ee1301/wk3/hw3_directory/strap012_HW3A.cpp @@ -12,7 +12,6 @@ One-armed Bandit Simulator #include <stdlib.h> #include <cmath> #include <iomanip> -#include <time.h> using namespace std; int spin_the_wheel(int d, int w) { @@ -21,7 +20,7 @@ int spin_the_wheel(int d, int w) { for (int i=0; i<w; i++) { spinOG = ( (rand() % d) + 1); spinNew = ( (rand() % d) + 1); - if (spinOG==spinNew) { + if (spinOG==spinNew) { win++; } } @@ -33,20 +32,19 @@ int spin_the_wheel(int d, int w) { } int main () { - srand(10000); + srand(88888888); //See int w, d, m, test; for (w=3; w<=6; w++) { m=0; for (d=9; d<=27; d++) { m=0; - for (long n=1000000; n>0; n--) { + for (long long n=1000000; n>0; n--) { int test = spin_the_wheel(d, w); m+=test; } double win=m; - cout << fixed << setprecision(5) - << "w=" << w << ", d=" << d - << ": Simulated probability = m/n = " << (win / 1000000.0) * 100.0 << "%. " + cout << "w=" << w << ", d=" << d + << ": Simulated probability = m/n = " << (win / 100000.0) * 100.0 << "%. " << "Theoretical probability = " << (d / (pow(d, w))) * 100 << "%." << endl; d+=2; } |