3.3 Write a recursive pseudo code algorithm that returns the maximum among the first n elements of an array.
3.4 Write a recursive algorithm that prints all the permutations of the first n characters of a string. For example the call print (“ABC”, 3) would print
ABC, ACB, BAC, BCA, CBA, CAB
3.5 Implement the algorithms written in part 3.3 and 3.4 in Java Language.
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