First clear solution for How to Find Friends by aleksandr.zaytcev - python coding challenges

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First solution in Clear category for How to Find Friends by aleksandr.zaytcev

def check_connection(network, first, second):
    for n in network:
        if first in n:
            pair = n.split("-")
            
            if first == pair[0]:
                new_first = pair[1]
            else:
                new_first = pair[0]
            
            if new_first == second:
                return True
            else:
                network = tuple(x for x in network if x != n)
                return check_connection(network, new_first, second)
                
    return False


if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert check_connection(
        ("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
         "scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
        "scout2", "scout3") == True, "Scout Brotherhood"
    assert check_connection(
        ("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
         "scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
        "super", "scout2") == True, "Super Scout"
    assert check_connection(
        ("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
         "scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
        "dr101", "sscout") == False, "I don't know any scouts."

July 5, 2017

Comments:

Ledorub on July 8, 2017, 11:39 p.m.
<pre class='brush: python'>print(check_connection( ("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2", "scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"), "scout3", "scout1")) print(check_connection( ("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2", "scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"), "scout1", "scout3")) Output: True False </pre>

aleksandr.zaytcev on July 9, 2017, 2:11 p.m.
<p>????</p>

Ledorub on July 10, 2017, 5:41 p.m.
<p>Check your code for this inputs. Scout3 - Scout1 gives us True. And, if we reverse: Scout1 - Scout3 gives us False. Scout1 - Sscout gives us False. But: Scout1 - Scout4, Scout4 - Sscout. It shuold be True.</p>

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