Definition: 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.
Input: 21, 23, ['K', 'h', '861', 'N', '423', 'F', 'H', 't', 'I', '9653', 'b', '4773', '3661', 'K', '5699', '4809', '7181', '3403', 'm', '1887', 'w', 'R', 'm', 'o', '6853', '4097', '4517']

mRw