benchmark/radix_sort-bench.cc
changeset 1869 52f5a7f9fb48
child 1956 a055123339d5
equal deleted inserted replaced
-1:000000000000 0:e5eca3de8add
       
     1 #define NDEBUG
       
     2 
       
     3 #include <lemon/time_measure.h>
       
     4 #include <lemon/smart_graph.h>
       
     5 #include <lemon/graph_utils.h>
       
     6 #include <lemon/maps.h>
       
     7 #include <lemon/error.h>
       
     8 
       
     9 #include <lemon/radix_sort.h>
       
    10 
       
    11 #include <vector>
       
    12 #include <algorithm>
       
    13 #include <cmath>
       
    14 
       
    15 using namespace std;
       
    16 using namespace lemon;
       
    17 
       
    18 void testRadixSort() {
       
    19   int n = 10000000;
       
    20   vector<int> data(n);
       
    21   for (int i = 0; i < n; ++i) {
       
    22     data[i] = (int)(1000 * (rand() / (RAND_MAX + 1.0))) - 500;
       
    23   }
       
    24   radixSort(data.begin(), data.end());
       
    25 }
       
    26 
       
    27 
       
    28 void testCounterSort() {
       
    29   int n = 10000000;
       
    30   vector<int> data(n);
       
    31   for (int i = 0; i < n; ++i) {
       
    32     data[i] = (int)(1000 * (rand() / (RAND_MAX + 1.0))) - 500;
       
    33   }
       
    34   counterSort(data.begin(), data.end());
       
    35 }
       
    36 
       
    37 void testSort() {
       
    38   int n = 10000000;
       
    39   vector<int> data(n);
       
    40   for (int i = 0; i < n; ++i) {
       
    41     data[i] = (int)(1000 * (rand() / (RAND_MAX + 1.0))) - 500;
       
    42   }
       
    43   sort(data.begin(), data.end());
       
    44 }
       
    45 
       
    46 void testStableSort() {
       
    47   int n = 10000000;
       
    48   vector<int> data(n);
       
    49   for (int i = 0; i < n; ++i) {
       
    50     data[i] = (int)(1000 * (rand() / (RAND_MAX + 1.0))) - 500;
       
    51   }
       
    52   stable_sort(data.begin(), data.end());
       
    53 }
       
    54 
       
    55 void testSorts() {
       
    56   {
       
    57     int n = 10000000;
       
    58     vector<int> data(n);
       
    59   }
       
    60   cout << "Radix sort: " << runningTimeTest(testRadixSort, 60) << endl;
       
    61   cout << "Counter sort: " << runningTimeTest(testCounterSort, 60) << endl;
       
    62   cout << "Standard sort: " << runningTimeTest(testSort, 60) << endl;
       
    63   cout << "Stable sort: " << runningTimeTest(testStableSort, 60) << endl;
       
    64 }
       
    65 
       
    66 
       
    67 int main() {
       
    68   testSorts();
       
    69   return 0;
       
    70 }