Define statistical functions that sort an array, find minimum and maximum number in the array, calculate range, mean and median of the numbers in the array. Write a main program that display menu to do these:

1. Insert - to input 20 numbers into one dimensional array,
2. Sort - call functions sort that have been defined earlier and display the result
3. Mean - call functions mean that have been defined earlier and display the result
4. Median - call function median that have been defined earlier and display the result
5. Range - call function median that have been defined earlier and display the result
6. Exit - will stop the program from running, otherwise the program will continuously running by asking user to input choice from the menu.