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  • 38
    \$\begingroup\$ Welcome to PPCG! Nice first challenge. \$\endgroup\$ Commented Mar 18, 2019 at 15:30
  • 1
    \$\begingroup\$ Are the characters specified in your challenge the only ones that will appear in the string? \$\endgroup\$ Commented Mar 18, 2019 at 15:31
  • \$\begingroup\$ @EmbodimentofIgnorance Yes, only the 4. \$\endgroup\$ Commented Mar 18, 2019 at 15:34
  • 33
    \$\begingroup\$ Wait you could make a language out of this \$\endgroup\$ Commented Mar 18, 2019 at 18:57
  • 2
    \$\begingroup\$ @Arnauld No, I really think only truthy for connected and falsy for unconnected. (Unless allowing a swap is normal for this kind of question?) \$\endgroup\$ Commented Mar 19, 2019 at 4:35