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: 4, 6, ['1399', 'd', 'X', '4795', 'H', 'R']

SOLUTION: 4795HR

PROBLEM: 1, 2, ['1271', '8049', '3425', '1377', 'r', '4725', 'j', '3583', '2769', 'T', 'j']

SOLUTION: 12718049

PROBLEM: 6, 10, ['g', '6957', 'h', '8099', 'C', '5423', '2559', '1397', 'H', '4241']

SOLUTION:
542325591397H4241