forked from menault/TD1_DEV51_Qualite_Algo
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include <stdio.h>
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// Fonction pour échanger deux entiers
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void swap(int *a, int *b) {
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int temp = *a;
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*a = *b;
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*b = temp;
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}
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// Partition du tableau
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int partition(int arr[], int low, int high) {
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int pivot = arr[high]; // Choisir le dernier élément comme pivot
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int i = low - 1;
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for (int j = low; j < high; j++) {
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if (arr[j] <= pivot) {
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i++;
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swap(&arr[i], &arr[j]);
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}
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}
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swap(&arr[i + 1], &arr[high]);
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return i + 1;
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}
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// Fonction récursive QuickSort
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void quicksort(int arr[], int low, int high) {
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if (low < high) {
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int pi = partition(arr, low, high);
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quicksort(arr, low, pi - 1);
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quicksort(arr, pi + 1, high);
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}
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}
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// Fonction d'affichage
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void printArray(int arr[], int size) {
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for (int i = 0; i < size; i++)
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printf("%d ", arr[i]);
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printf("\n");
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}
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// Programme principal
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int main() {
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int arr[] = {64, 34, 25, 12, 22, 11, 90};
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int n = sizeof(arr) / sizeof(arr[0]);
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printf("Tableau original:\n");
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printArray(arr, n);
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quicksort(arr, 0, n - 1);
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printf("Tableau trie (QuickSort):\n");
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printArray(arr, n);
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return 0;
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} |