Bubble Sort In C Mcq Exercise 1

✅ O(n log n)
✅ O(n^2)
✅ O(log n)

Explanation:

In the worst case for Bubble Sort, it requires O(n^2) comparisons and swappings to sort the array.

Which of the following will terminate the Bubble Sort easily?

✅ When there are no swaps in a pass.
✅ When the whole array is traversed once.
✅ After doing a fixed number of iterations.
✅ None of the above.

Explanation:

If there are no swaps made during a pass, it means the array is already sorted, and the sorting process can terminate easily.

Which of the following is true about the Bubble Sort in C?

✅ It will use additional memory proportional to the input size.
✅ It is an in-place sorting algorithm.
✅ It guarantees O(n) time complexity.
✅ It can be used for large datasets more efficiently.

Explanation:

Bubble Sort is an in-place sorting algorithm because it sorts the array without taking additional memory.

What could be the primary disadvantage of the Bubble Sort?

✅ It isn't very easy to implement.
✅ It needs more additional memory.
✅ It has the highest average time complexity.
✅ It is unstable.

Explanation:

The main disadvantage of Bubble Sort is having the highest average time complexity of O(n^2), which makes it more inefficient for large datasets.

What kind of Bubble Sort data can perform very poorly?

✅ Sorted data
✅ Data was sorted in reverse order.
✅ Random data
✅ All of the above

Explanation:

Bubble Sort exhibits inefficient performance on datasets that are not already sorted because of its time complexity of O(n^2).

Could you please provide the output generated by the program below?

Example


#include <stdio.h>
void bubbleSort(int arr[], int n) {
    int i, j, temp;
    for (i = 0; i < n - 1; i++) {
        for (j = 0; j < n - i - 1; j++) {
            if (arr[j] > arr[j + 1]) {
                temp = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = temp;
            }
        }
    }
}
int main() {
    int arr[] = {5, 1, 4, 2, 8};
    int n = sizeof(arr) / sizeof(arr[0]); // Corrected sizeOf to sizeof
    int i;
    bubbleSort(arr, n);
    for (i = 0; i < n; i++)
        printf("%d ", arr[i]);
    return 0;
}

✅ 12458
✅ 51428
✅ 84215
✅ 54218

Explanation:

The provided Bubble Sort algorithm arranges the array in increasing order, producing '1 2 4 5 8'.

Input Required