Given two strings, the task is to check whether these strings are meta strings or not. Meta strings are the strings which can be made equal by exactly one swap in any of the strings. Equal string are not considered here as Meta strings.
Input : str1 = "geeks" str2 = "keegs" Output : Yes By just swapping 'k' and 'g' in any of string, both will become same. Input : str1 = "rsting" str2 = "string Output : No Input : str1 = "Converse" str2 = "Conserve"
Asked in : Google
Below are steps used in the algorithm.
- Check if both strings are of equal length or not, if not return false.
- Otherwise, start comparing both strings and count number of unmatched characters and also store the index of unmatched characters.
- If unmatched characters are more than 2 then return false.
- Otherwise check if on swapping any of these two characters in any string would make the string equal or not.
- If yes then return true. Otherwise return false.
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