For every sequence of consecutive identical items in a, retain only one item of that sequence. Suppose we call the number of retained items r. Then when this functions returns, elements 0 through r-1 of a must contain the retained items (in the same relative order they were in originally), and the remaining elements may have whatever values you want. Return the number of retained items. Here's an example:

The two main ways in which marketers address the competition with their strategies are by satisfying a need better than a competition and by

Determine whether the following careers would require training or college.

Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.