In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
3, 11, ['2145', 'T', 'u', 'j', 'm', 'G', 'A', '7473', '7021', '7859', 'h', '4771', '7433', 'L', 'B', '6137', 'Y', 'K', '3623']