Leetcode Problem 854. K-Similar Strings

854. K-Similar Strings

Leetcode Solutions

Initialize a queue and add the initial string s1 to it.
Initialize a set to keep track of visited strings.
Initialize a variable level to keep track of the number of swaps made so far.
While the queue is not empty: a. For each string in the current level of the queue: i. If the string is equal to s2, return level as the answer. ii. Find the first index where the current string and s2 differ. iii. Generate all possible strings by swapping the character at the differing index with characters at subsequent indices that would make the string more similar to s2. iv. For each generated string, if it has not been visited, add it to the queue and mark it as visited. b. Increment level.
If we exit the loop, return -1 to indicate that no solution was found (this should not happen as s1 and s2 are guaranteed to be anagrams).

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