TASK 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.
PROBLEM: 7, 18, ['2347', 'y', 'i', 'G', 'p', '821', 'l', 'K', '2571', '3897', 'I', 'X', 'o', 'w', 'F', 'h', 'o', 'k']

SOLUTION: kohFwoXI38972571Kl

PROBLEM: 14, 20, ['7043', '8365', 'm', '8535', 'i', '9021', '6367', 'Q', '5707', 'r', 'D', 'H', 'e', 'g', '5847', '7645', 'f', 'R', 'u', '1699', '795', 'h', 'H', '489']

SOLUTION: 1699uRf76455847g

PROBLEM: 11, 15, ['r', '4123', '1119', '3311', '1601', 'c', 'i', 'Q', 'j', '5213', '9507', '5031', '2869', 'N', 'e', 'N']

SOLUTION:
eN286950319507