Question: Write a program named LetterPermutation.java that prompts for a positive integer (get this number from cmd argument list and displays all permutations of the letters

Write a program named LetterPermutation.java that prompts for a positive integer (get this number from cmd argument list and displays all permutations of the letters "L" and "R" of that length. For example, if the length is 3 your program should display: LLL LLR LRL LRR RLL RLR RRL RRR 

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