Is It a Rotation?
Beginner
A rotation moves some characters from the front of a string to its back, keeping their order ("abcde" rotated by 2 is "cdeab"). Return True if goal can be obtained from s by some number of rotations (zero counts).
Examples
Example 1
Input:
is_rotation('abcde', 'cdeab')
Output:
True
Example 2
Input:
is_rotation('abcde', 'abced')
Output:
False
Constraints
0 <= len(s), len(goal) <= 3 * 10**5- Both strings contain lower-case letters.
Theory
Go to TheoryKeywords
dsa-sheetstringsstring-basics
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