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: 3, 4, ['7311', '317', 'w', 'c', 'S', '5919', '3377']

SOLUTION: wc

PROBLEM: 15, 18, ['u', 'W', 'D', '607', '4111', '1207', 'N', 'T', 'Q', '7755', 'I', '9387', '6501', 't', '901', 'W', 'P', 'F', 'o', 'S', '6809', '1973', '3791', '8015', 'x', 'm', '4859', 'V', 'G']

SOLUTION: 901WPF

PROBLEM: 7, 15, ['b', '1351', 'c', 'g', 's', '3579', '5161', '3523', 'E', '3477', 'v', '2987', 'W', '9381', 'L', '8949', '5505', '1869', '5237', '699', 'v', 'N', 'u']

SOLUTION:
51613523E3477v2987W9381L