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Here, elements are shifted leftwards, and an element that is shifted off the left end is shifted into the rightmost position. We have described a

Here, elements are shifted leftwards, and an element that is shifted "off the left end" is shifted into the rightmost
position. We have described a left rotation by 1 position (each element gets shifted by one spot). One can generalize this
to a rotation in which each element moves k spots to the left. An example with k=2 is shown above.
In a file called LeftRotate.java write a method called leftRotate (int[] A) that performs left rotation and test it with at
least three different arrays (of different sizes), including int[]A={1,4,9,16,25}. The test arrays should be in main().
Following each test, print the resulting array to confirm that it was properly rotated.
Then, write a method called leftRotateByK (int[] A, int k) that achieves a left rotation of an integer array by k positions,
where k is a variable you can change in the program. Test it out for k=2,k=3 and k=5 using the same test data, including
int[]A={1,4,9,16,25}. Print the "before" and "after" arrays to show that it rotated correctly.
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