Write a regular expression over E={a,b} that generates the following language L={w\w has exactly 2 occurrences of a}. (Note the two occurrences of a can be anywhere in the string) (i) Give four different examples of strings of length six that belong to the above language.

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Time Complexity

In computer science, the computational complexity that is measured in terms of time is referred to as time complexity that defines how long it takes a computer to execute an algorithm. An algorithm's time complexity is measured by the the amount of time required to execute each statement of code in the algorithm. If a statement is set to execute repetitively, the number of times it will be N multiplied by the time it takes to run that function each time is equal .