iAdamo / sorting_algorithms

Algorithm that puts elements of a list into an order

Sorting Algorithms & Big O

C Algorithm Data structure

Write in the file 0-nth, the big O notations of the time complexity of the Bubble sort algorithm, with 1 notation per line:

• in the best case
• in the average case
• in the worst case

0.Bubble sort

Write a function that sorts an array of integers in ascending order using the Bubble sort algorithm

• Prototype: void bubble_sort(int *array, size_t size);
• You’re expected to print the array after each time you swap two elements (See example below)

0-bubble_sort Algorithm

1. Check for special cases:- If array is NULL or size is 0, return immediately.
2. Initialize variables:- i, j, size_i, temp, and flag are declared for later use.
3. Calculate size_i:- Set size_i to size - 1.
4. Start the outer loop:- Loop through the array using i from 0 to size - 1.
5. Initialize flag and start the inner loop:- Set flag to 0 at the beginning of each pass and loop through the array using j from 0 to size_i.
6. Compare adjacent elements and swap if necessary:- If array[j] > array[j + 1], swap them and print the array.
7. Check for sorted array:- If flag remains 0 after the inner loop, return early as the array is sorted.
8. Decrement size_i:- After each pass, decrement size_i by 1 to consider a shorter unsorted portion.
9. Repeat the outer loop until sorted:- Continue the outer loop until i reaches size - 1.
10. Return:- The function exits when the array is fully sorted or when a sorted portion is detected.

Write a function that sorts a doubly linked list of integers in ascending order using the Insertion sort algorithm

• Prototype: void insertion_sort_list(listint_t **list);
• You are not allowed to modify the integer n of a node. You have to swap the nodes themselves.
• You’re expected to print the list after each time you swap two elements.

1-Insertion_sort Algorithm

1. Input Validation:- Check if the input list (list) is empty (NULL). If it is, there's nothing to sort, so return early.

2. Initialization:- Initialize two pointers, node1 and node2, to traverse the list.

3. Main Loop:- Start a loop that iterates through the list as long as there is a node1->next.

4. Comparison:- Compare the value (n) of the current node (node1) with the value of the next node (node2).

5. Insertion Condition:- If node1 has a greater value than node2, it means node2 should be inserted before node1 to maintain sorted order.

6. Updating Pointers for Insertion:- Update the prev and next pointers of node1, node2, and their neighboring nodes to insert node2 before node1.

7. Continue Iteration:- After each comparison and possible insertion, move node1 to the next position in the list.

8. Completion:- Once the loop finishes, the list is sorted, and the function is done.