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 concatenate all elements of A from the ith element to the jth element, and print 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.
PROBLEM: 6, 25, ['6015', '5139', 'q', '9439', '8419', '8509', 'v', 'i', '5431', '5747', 'm', 'X', '4881', 'B', '2509', '7823', 'r', '4433', '7799', '5867', '2089', '9547', 'X', 'T', '6355', 'F']

SOLUTION: 8509vi54315747mX4881B25097823r44337799586720899547XT6355

PROBLEM: 10, 12, ['8923', '3403', 'G', '3463', '2815', '3175', 'Y', 'S', '5771', 'r', '2019', '7745', 'S', 'Q', 'b', 'L', 'A', '1093']

SOLUTION: r20197745

PROBLEM: 4, 7, ['a', '2245', '3457', '1419', 'k', 'j', '2803', 'c', 'H', 'g', '2347']

SOLUTION:
1419kj2803