first commit

[anuj2331]

Memory Allocation:

Changed from calloc(n, sizeof(n)) to calloc(n, sizeof(int)) for correct integer allocation.
Early Exit in Bubble Sort:

Introduced a swapped flag to terminate the loop early if no swaps occur, enhancing performance.
Output Formatting:

Updated the printArray function to use commas instead of hyphens for clearer output.
Memory Allocation Check:

Added a check for successful memory allocation to avoid segmentation faults.
Memory Deallocation:

Included free(a); to release allocated memory and prevent memory leaks.
These changes improve correctness, efficiency, readability, and memory management.