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Program to rotate a string of size n, n times to left in Python
Suppose we have a string s of size n. We have to find all rotated strings by rotating them 1 place, 2 places ... n places.
So, if the input is like s = "hello", then the output will be ['elloh', 'llohe', 'lohel', 'ohell', 'hello']
To solve this, we will follow these steps −
- res := a new list
- n := size of s
- for i in range 0 to n, do
- s := (substring of s from index 1 to n-1) concatenate s[0]
- insert s at the end of res
- return res
Example
Let us see the following implementation to get better understanding −
def solve(s): res = [] n = len(s) for i in range(0, n): s = s[1:n]+s[0] res.append(s) return res s = "hello" print(solve(s))
Input
hello
Output
['elloh', 'llohe', 'lohel', 'ohell', 'hello']
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