Given two strings, the task is to find if a string can be obtained by rotating another string two places.
Input : string1 = "amazon" string2 = "azonam" // rotated anti-clockwise Output : Yes Input : string1 = "amazon" string2 = "onamaz" // rotated clockwise Output : Yes
Asked in: Amazon Interview
1- There can be only two cases: a) Clockwise rotated b) Anti-clockwise rotated 2- If clockwise rotated that means elements are shifted in right. So, check if a substring[2.... len-1] of string2 when concatenated with substring[0,1] of string2 is equal to string1. Then, return true. 3- Else, check if it is rotated anti-clockwise that means elements are shifted to left. So, check if concatenation of substring[len-2, len-1] with substring[0....len-3] makes it equals to string1. Then return true. 4- Else, return false.
Below is the implementation of above approach.
Exercise : Check if string2 is obtained by rotating string1 by k places.
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