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2. Within a program Swapping Pairs.java, write a method called swappairs that accepts an array of integers and swaps the elements at adjacent indexes. That
2. Within a program Swapping Pairs.java, write a method called swappairs that accepts an array of integers and swaps the elements at adjacent indexes. That is, elements 0 and 1 are swapped, elements 2 and 3 are swapped, and so on. If the array has an odd length, the final element should be left unmodified. Your main method should create test arrays and call the swappairs method (once for each test array) For example, the array [10, 20, 30, 40, 50] should become [20, 10, 40, 30, 50] after a call to your method with the unswapped array as a parameter. Make sure you test an array with an even number of elements and one with an odd number of elements. Use the Arrays.toString() method to print each test array in your main method both before and after calling the swap Pairs method. Don't forget to import java.util.Arrays
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