This problem has to do with the choice of a pivot in quicksort. (a) Describe the property that the pivot must satisfy in order for quicksort to have its best-case running time.
(b) Explain how the order statistics algorithm described in class can be used to generate a good pivot. What is the worst-case running time of this algorithm? What is the expected running time of this algorithm?

Write a javascript program that reads three integers named start, end, and divisor from three text fields. your program must output to a div all the integers between start and end, inclusive, that are evenly divisible by divisor. the output integers must be separated by spaces. for example, if a user entered 17, 30, and 5, your program would output "20 25 30" (without the quotes) because those are the only integers between 17 and 30 (including 17 and 30) that are evenly divisible by 5.

Jason, samantha, ravi, sheila, and ankit are preparing for an upcoming marathon. each day of the week, they run a certain number of miles and write them into a notebook. at the end of the week, they would like to know the number of miles run each day, the total miles for the week, and average miles run each day. write a program to them analyze their data. your program must contain parallel arrays: an array to store the names of the runners and a two-dimensional array of five rows and seven columns to store the number of miles run by each runner each day. furthermore, your program must contain at least the following functions: a function to read and store the runners’ names and the numbers of miles run each day; a function to find the total miles run by each runner and the average number of miles run each day; and a function to output the results. (you may assume that the input data is stored in a file and each line of data is in the following form: runnername milesday1 milesday2 milesday3 milesday4 milesday5 milesday6 milesday7.)

Respond to the following in three to five sentences. select the workplace skill, habit, or attitude described in this chapter that you believe is most important for being a successful employee.