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: 15, 18, ['9099', '2041', '7065', '1323', '2267', '5877', 'r', 'j', '4411', 'u', 'V', '4919', '6401', '8449', 'X', 'H', 'z', 's', '2543', '4643']

SOLUTION: szHX

PROBLEM: 5, 20, ['5377', 'j', 'j', '1767', '2103', '9547', 'I', 'M', '4067', '2571', 'V', 'Z', 'O', '3421', 'V', 'v', '4919', 'X', '307', 'M', '1603']

SOLUTION: M307X4919vV3421OZV25714067MI95472103

PROBLEM: 1, 22, ['6101', 'c', '4529', '1179', '8969', 'p', 'A', 'Z', 'h', '5533', '9803', '667', '3873', '3459', '1025', 'u', 'x', '5267', 'g', 'K', '6975', '2503', '9979', '7791', 'F', '5735']

SOLUTION:
25036975Kg5267xu10253459387366798035533hZAp896911794529c6101