TD2 speed fini

TP2/tableau/main.c

@@ -1,11 +1,41 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <time.h>
+
+#define NBVAL 1E4
+#define MIN 0
+#define MAX 1E5
+
+clock_t start, finish;
+double duration;
 
 int *InitTab(unsigned int nbVal, int min, int max);
 bool Verif(int *t, unsigned int nbVal);
-void MonTri(int *t, unsigned int nbVal);
-void quickSort(int *t, int left, int right);
+void bubbleSort(int *t, unsigned int nbVal, int (*compare)(int, int));
+void quickSort(int *t, unsigned int nbVal, int (*compare)(int, int));
+void _quickSort(int *t, int left, int right, int (*compare)(int, int));
+void sort(int *t, unsigned int nbVal, void (*sortMethod)(int *t, unsigned int nbVal, int (*compare)(int, int)), int (*compare)(int, int))
+{
+    sortMethod(t, nbVal, compare);
+}
+
+int min2max(int a, int b)
+{
+    return a - b;
+}
+int max2min(int a, int b)
+{
+    return b - a;
+}
+int pair(int a, int b)
+{
+    if (a % 2 == 0 && b % 2 != 0)
+        return -1;
+    if (a % 2 != 0 && b % 2 == 0)
+        return 1;
+    return a - b;
+}
 
 // if true print "true"
 // if false print "false"
@@ -21,13 +51,48 @@ void printBool(bool b)
     }
 }
 
+int *duplicate(int *t, unsigned int nbVal)
+{
+    int *t2 = (int *)malloc(nbVal * sizeof(int));
+    for (int i = 0; i < nbVal; i++)
+    {
+        t2[i] = t[i];
+    }
+    return t2;
+}
+
+void printMethod(void (*sortMethod)(int *t, unsigned int nbVal, int (*compare)(int, int)))
+{
+    if (sortMethod == bubbleSort)
+    {
+        printf("bubbleSort");
+    }
+    else if (sortMethod == quickSort)
+    {
+        printf("quickSort");
+    }
+}
+
 int main()
 {
-    int *t = InitTab(10, 0, 100);
-    printBool(Verif(t, 10));
-    // MonTri(t, 10);
-    quickSort(t, 0, 9);
-    printBool(Verif(t, 10));
+    void *sortMethodArray[2] = {bubbleSort, quickSort};
+
+    for (int i = 0; i < 2; i++)
+    {
+        srand(0);
+        int *t = InitTab(NBVAL, MIN, MAX);
+        printf("----------------------");
+        printMethod(sortMethodArray[i]);
+        printf("---------------------\n");
+        printBool(Verif(t, NBVAL));
+        start = clock();
+        sort(t, NBVAL, sortMethodArray[i], min2max);
+        finish = clock();
+        printBool(Verif(t, NBVAL));
+        duration = (double)(finish - start) / CLOCKS_PER_SEC;
+        printf("%f seconds\n", duration);
+        printf("----------------------------------------------------\n");
+    }
     return 0;
 }
 
@@ -55,45 +120,60 @@ bool Verif(int *t, unsigned int nbVal)
         }
     }
 
-    for (int i = 0; i < nbVal; i++)
+    // print array 10 head and  10 tail
+    for (int i = 0; i < 10; i++)
     {
         printf("%d ", t[i]);
     }
+    printf("....... ");
+    for (int i = nbVal - 10; i < nbVal; i++)
+    {
+        printf("%d ", t[i]);
+    }
+
     return flg;
 }
 
-void MonTri(int *t, unsigned int nbVal)
+void bubbleSort(int *t, unsigned int nbVal, int (*compare)(int, int))
 {
-    int i, j, tmp;
-    for (i = 0; i < nbVal; i++)
+    int tmp;
+    for (int i = 0; i < nbVal - 1; i++)
     {
-        for (j = i + 1; j < nbVal; j++)
+        for (int j = 0; j < nbVal - 1 - i; j++)
         {
-            if (t[i] > t[j])
+            if (compare(t[j], t[j + 1]) > 0)
             {
-                tmp = t[i];
-                t[i] = t[j];
-                t[j] = tmp;
+                tmp = t[j];
+                t[j] = t[j + 1];
+                t[j + 1] = tmp;
             }
         }
     }
 }
 
 // quick sort
-void quickSort(int *t, int left, int right)
+void quickSort(int *t, unsigned int size, int (*compare)(int, int))
 {
-    int i = left, j = right;
+    _quickSort(t, 0, size - 1, compare);
+}
+
+void _quickSort(int *t, int left, int right, int (*compare)(int, int))
+{
+    if (right - left < 1)
+        return;
+
+    int i = left + 1, j = right;
     int tmp;
-    int pivot = t[(left + right) / 2];
+    int pivot = t[left];
 
     /* partition */
     while (i <= j)
     {
-        while (t[i] < pivot)
+        if (compare(t[i], pivot) < 0)
             i++;
-        while (t[j] > pivot)
+        else if (compare(t[j], pivot) >= 0)
             j--;
-        if (i <= j)
+        else
         {
             tmp = t[i];
             t[i] = t[j];
@@ -101,11 +181,13 @@ void quickSort(int *t, int left, int right)
             i++;
             j--;
         }
-    };
+    }
+    tmp = t[left];
+    t[left] = t[j];
+    t[j] = tmp;
 
     /* recursion */
-    if (left < j)
-        quickSort(t, left, j);
-    if (i < right)
-        quickSort(t, i, right);
+
+    _quickSort(t, left, j - 1, compare);
+    _quickSort(t, j + 1, right, compare);
 }