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main.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+// Renvoie la racine carrée d'un nombre entier positif, sinon -1
+int racineCarre(int nb) {
+    if (nb == 0 || nb == 1) return nb;
+
+    int prob = nb / 2;
+    int nextProb;
+
+    while (1) {
+        nextProb = (prob + nb / prob) / 2;
+
+        if (nextProb >= prob) {
+            break;
+        };
+
+        prob = nextProb;
+    }
+
+    if ((prob * prob) == nb) {
+        return prob;
+    } else {
+        return -1;
+    }
+}
+
+// Renvoie un tableau de racine carré de tab
+int* racineCarreTab(int tab[], int taille) {
+    int* result = (int*)malloc(taille * sizeof(int));
+    for (int i = 0; i < taille; i++) {
+        result[i] = racineCarre(tab[i]);
+    }
+    return result;
+}
+
+// Renvoie un tableau tirer
+int* TriSpecial(int tab[], int taille) {
+    int nonEntier = 0;
+    for (int i = 0; i < taille; i++) {
+        if (racineCarre(tab[i]) == -1) {
+            nonEntier++;
+        }
+    }
+
+    int* result = (int*)malloc(taille * sizeof(int));
+
+    if (nonEntier % 2 == 0) {
+        int somme = 0;
+        for (int i = 0; i < taille; i++) {
+            somme += tab[i]; // Calcul somme
+        }
+        
+        for (int i = 0; i < taille; i++) {
+            if (i % 2 == 0) { // Pair
+                result[i] = tab[i];
+            } else { // Impair
+                result[i] = somme * tab[i];
+            }
+        }
+    } else {
+        int* racines = (int*)malloc(taille * sizeof(int));
+        int somme = 0;
+        for (int i = 0; i < taille; i++) {
+            racines[i] = racineCarre(tab[i]);
+            somme += racines[i]; // Calcul somme 
+        }
+        
+        for (int i = 0; i < taille; i++) {
+            if (i % 2 == 0) { // Pair
+                result[i] = racines[i];
+            } else { // Impair
+                result[i] = somme * tab[i];
+            }
+        }
+        
+        free(racines);
+    }
+
+    return result;
+}
+
+int main(void) {
+    printf("========== Test racineCarre ==========\n");
+    printf("racineCarre(9) = %d\n", racineCarre(9));
+    printf("racineCarre(10) = %d\n", racineCarre(10));
+    printf("\n");
+
+    printf("========== Test racineCarreTab ==========\n");
+    int tab1[] = {9, 25, 4};
+    int tab2[] = {10, 36, 2};
+    
+    int* result1 = racineCarreTab(tab1, 3);
+    printf("racineCarreTab([9, 25, 4]) = ");
+    for (int i = 0; i < 3; i++) {
+        printf("%d ", result1[i]);
+    }
+    printf("\n");
+    free(result1);
+
+    int* result2 = racineCarreTab(tab2, 3);
+    printf("racineCarreTab([10, 36, 2]) = ");
+    for (int i = 0; i < 3; i++) {
+        printf("%d ", result2[i]);
+    }
+    printf("\n\n");
+    free(result2);
+
+    printf("========== Test TriSpecial ==========\n");
+    int tab3[] = {3, 5, 25, 16};
+    int* result3 = TriSpecial(tab3, 4);
+    printf("TriSpecial([3, 5, 25, 16]) = ");
+    for (int i = 0; i < 4; i++) {
+        printf("%d ", result3[i]);
+    }
+    printf("\n");
+    free(result3);
+
+    int tab4[] = {36, 9, 100, 2, 3, 7};
+    int* result4 = TriSpecial(tab4, 6);
+    printf("TriSpecial([36, 9, 100, 2, 3, 7]) = ");
+    for (int i = 0; i < 6; i++) {
+        printf("%d ", result4[i]);
+    }
+    printf("\n\n");
+    free(result4);
+    
+    return 0;
+}
+
+// int main(void) {
+    // Racine carrée
+    // printf("%d\n", racineCarre(9));
+    // printf("%d\n", racineCarre(16));
+    // printf("-----------------\n");
+    // donne bien racineCarree(9) → 3 et racineCarree(10) → -1
+
+    // Racine carrée tab
+    // int tab1[] = {9,25,4};
+    // int tab2[] = {10,36,2};
+    // int* result1 = racineCarreTab(tab1, 3);
+    // int* result2 = racineCarreTab(tab2, 3);
+    // for (int i = 0; i < 3; i++) {
+    //     printf("%d ", result1[i]);
+    // }
+
+    // for (int i = 0; i < 3; i++) {
+    //     printf("%d ", result2[i]);
+    // }
+
+    // Test profiler avec racineCarrreTab
+    // int tab[10000];
+    // for (int i = 0; i < 10000; i++) {
+    //     tab[i] = 1000000 + i;
+    // }
+
+    // for (int repeat = 0; repeat < 10000; repeat++) {
+    //     int* a = racineCarreTab(tab, 10000);
+    //     free(a);
+    // }
+
+    // Tri spéciale
+    // int tab1[] = {3, 5, 25, 16};
+    // int* result1 = TriSpecial(tab1, 4);
+    // printf("Test 1 : ");
+    // for (int i = 0; i < 4; i++) {
+    //     printf("%d ", result1[i]);
+    // }
+    // printf("\n");
+    // free(result1);
+    // // donne bien TriSpecial([3,5,25,16]) → [3,245,25,784]
+
+    // int tab2[] = {36, 9, 100, 2, 3, 7};
+    // int* result2 = TriSpecial(tab2, 6);
+    // printf("Test 2 : ");
+    // for (int i = 0; i < 6; i++) {
+    //     printf("%d ", result2[i]);
+    // }
+    // printf("\n");
+    // free(result2);
+    // donne bien TriSpecial([36,9,100,2,3,7]) → [6,144,10,32,-1,112]
+    
+    // return 0;
+// }
+
+// gcc main.c -o app
+// ./app
+
+// (Profiling)
+// gcc -pg main.c -o app
+// ./app
+// gprof "app.exe" gmon.out