$($Markov Model$)$ Problem $4($Random Text Generator$)-$ Accept command$-$line arguments k $($int$)$ and n $($int$).-$ Initialize text to text read from standard input using sys$.$stdin.read$().-$ Create a Markov model using text and k$.-$ Use the model to generate a random text of length n and starting with the first k characters of text. $-$ Write the random text to standard output.