https://www.hackerrank.com/challenges/coin-change/problem def get_ways(n, c): return [[]] if n == 0 else [[b, *j] for i, b in enumerate(c) if b = coin: for way in get_ways(change - coin, coins[i:]): my_ways.append([coin, *way]) return my_ways n = int(input("Target Change: ").strip())c = list(map(int, input("Coin List: ").strip().split()))c.sort()ways = get_ways(n, c)print("Number of Ways:", len(..
https://www.hackerrank.com/challenges/reduced-string/problem # Python 3 def reduce_string(s): for i, x in enumerate(s[1:]): if s[i] == x: return reduce_string(s[:i] + s[i + 2:]) return s result = reduce_string(input().strip())print(result) if result != '' else print('Empty String') # Python 3 def reduce_string(s): str_list = list(s) index = 0 while len(str_list) > 1 and index < len(str_list) - 1..