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: 20, 24, ['i', '3377', '9699', 'n', '9523', 's', '8623', '579', 'P', '1479', 'W', 'X', '4923', '6819', '137', '1415', 'b', '2839', '8567', 'B', 'Z', '3669', 'j', 'g', 'o', 'g', 'f']

gj3669ZB