Update question1.c

question1.c

@@ -1,38 +1,44 @@
-// Sort an array using c programing langauge
-  #include <stdio.h>
-    void main()
-    {
-
-        int i, j, a, n, num[30];
-        printf("Enter the value of N \n");
-        scanf("%d", &n);
-
-        printf("Enter the numbers \n");
-        for (i = 0; i < n; ++i){
-            printf("Enter element : %d",i+1);
-            scanf("%d", &num[i]);
-        }
-        for (i = 0; i < n; ++i) 
-        {
-
-            for (j = i + 1; j < n; ++j)
-            {
-
-                if (num[i] < num[j]) 
-                {
-
-                    a =  number[i];
-                    number[i] = number[j];
-                    number[j] = a;
-
-                }
-
-            }
-
-        }
-
-        printf("The numbers arranged in drsending order are given below \n");
-        for (i = 0; i < n; ++i)
-            printf("%d\n", number[i]);
-
+#include <stdio.h>
+void swap(int *a, int *b) {
+  int t = *a;
+  *a = *b;
+  *b = t;
+}
+int partition(int array[], int low, int high) {
+  int pivot = array[high];
+  int i = (low - 1);
+  for (int j = low; j < high; j++) {
+    if (array[j] <= pivot) {
+      i++;
+      swap(&array[i], &array[j]);
     }
+  }
+  swap(&array[i + 1], &array[high]);
+  return (i + 1);
+}
+
+void quickSort(int array[], int low, int high) {
+  if (low < high) {
+    int pi = partition(array, low, high);
+    quickSort(array, low, pi - 1);
+    quickSort(array, pi + 1, high);
+  }
+}
+void printArray(int array[], int size) {
+  for (int i = 0; i < size; ++i) {
+    printf("%d  ", array[i]);
+  }
+  printf("\n");
+}
+int main() {
+  int data[] = {100,500,410,526,22};
+
+  int n = sizeof(data) / sizeof(data[0]);
+
+  printf("Unsorted Array\n");
+  printArray(data, n);
+  quickSort(data, 0, n - 1);
+
+  printf("Sorted array in ascending order: \n");
+  printArray(data, n);
+}