Execution time for sorting in Java

Write a program that obtains the execution time of selection sort, insertion sort, merge sort, and quick sort for 50,000, 100,000, 200,000, 250,000 and 300,000. 

Your program shall create data randomly and print a table like this:
Array Size Selection Sort Insertion Sort Merge Sort Quick Sort
50,000    
100,000    
200,000    
250,000    
300,000    
 
Submission
1. Source code (.java)
2. A brief note discussing each sorting algorithm – approach (divide-and-conquer, recursive), performance (average, worse-case complexity in Big-O), and when to use each algorithm. One page is enough.

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