Generate All Binary String Expansions with Wildcard '?': coding question

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Write an iterative approach for the given binary string with wildcard "?" where the wildcard can be replaced with 0 or 1. Return all permutations by replacing the wildcard character e.g. "0?" -> "00", "01" "0?1" -> "001", "011" "0??1" -> "0001", "0011", "0101", "0111" With the interviewer's hint, solved using the BFS.

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Generate All Binary String Expansions with Wildcard '?'
Reported Jul 24, 2025 · 1 source report
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Generate All Binary String Expansions with Wildcard '?'

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Generate All Binary String Expansions with Wildcard '?'

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