Question

Write a program to sort numbers in ascending order.

Answer 1

Answer:

void swap(int* xp, int* yp)  

{  

   int temp = *xp;  

   *xp = *yp;  

   *yp = temp;  

}  

 

 

void selectionSort(int arr[], int n)  

{  

   int i, j, min_idx;  

 

   // One by one move boundary of unsorted subarray  

   for (i = 0; i < n - 1; i++) {  

 

       // Find the minimum element in unsorted array  

       min_idx = i;  

       for (j = i + 1; j < n; j++)  

           if (arr[j] < arr[min_idx])  

               min_idx = j;  

 

       // Swap the found minimum element  

       // with the first element  

       swap(&arr[min_idx], &arr[i]);  

   }  

}  

 

// Function to print an array  

void printArray(int arr[], int size)  

{  

   int i;  

   for (i = 0; i < size; i++)  

       printf("%d ", arr[i]);  

   printf("\n");  

}  

 

// Driver code  

int main()  

{  

   int arr[] = { 0, 23, 14, 12, 9 };  

   int n = sizeof(arr) / sizeof(arr[0]);  

   printf("Original array: \n");  

   printArray(arr, n);  

 

   selectionSort(arr, n);  

   printf("\nSorted array in Ascending order: \n");  

   printArray(arr, n);  

 

   return 0;  

}  

Output:

Original array:  

0 23 14 12 9  

Sorted array in Ascending order:  

0 9 12 14 23

Explanation:

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