Consider the alphabet Σ = {c, d}. Write out the regular expression of the following three with the language they represent with a brief one to two sentence explanation: (1). dc*d (2). (c ∪ ε)(dc)∗(d ∪ ε) (3). cΣ∗∪ dΣ*

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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 .