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: 15, 18, ['9781', '4365', '6517', 'u', 's', '9177', '8749', 'V', 'w', 'M', '5559', '5421', 'R', 'N', 'I', '5705', 'w', '5821']

SOLUTION: I5705w5821

PROBLEM: 7, 19, ['1899', '4271', 'D', '8199', 'm', '4847', '3631', '7637', '4429', '7541', 'g', '6763', '8281', 'N', '5505', '3547', '2173', 'P', 'R', '655', '4599', 'y', 'Z', '2059', '3229', 'c', '4363', '8351']

SOLUTION: 3631763744297541g67638281N550535472173PR

PROBLEM: 3, 23, ['i', '3777', 'X', '9375', '2419', 'a', 'v', 'I', '8653', 'A', 'o', '3649', 't', '7927', '2895', '2015', 'U', 's', '6445', '4987', 's', '2337', '6281', 'q']

SOLUTION:
X93752419avI8653Ao3649t792728952015Us64454987s23376281