Question: 1. (String permutation) Write a recursive method public static void displayPermutation(String s) in a class named Question1.java, to print all the permutations of a string.

1. (String permutation) Write a recursive method public static void displayPermutation(String s) in a class named Question1.java, to print all the permutations of a string. For example, Input: abc Output: All possible permutations of abc are: abc acb bac bca cab cba

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