CODEWITHSUNDEEP
pythonrotationsubstringslice
RegularClique
RegularClique

Reputation: 3

How do I rotate a string to the right until every letter has been rotated?

I want to rotate a word to the right, so that every letter has passed.

What I tried to do is make a function. It looks like this (yeah yeah ik lmao):

word = "Abobus";

length = len(word);

n = 1;

def rotation():
    for i in range(length + 1):
        c = word[0 : length-n] + word[length-n:]
        print(c)

rotation();

I needed the output to be:

Abobus sAbobu usAbob busAbo obusAb bobusA Abobus

Instead, the output was:

Abobus Abobus Abobus Abobus Abobus Abobus Abobus

What exactly am I doing wrong?

Upvotes: 0

Views: 91

Answers (3)

Tomer Ariel
Tomer Ariel

Reputation: 1537

Another option (which has potential to be more efficient when working with large inputs) is to use collections.deque which is optimized for such operations:

import collections

word = "Abobus"
word_as_deque = collections.deque("Abobus")

for _ in word:
    print("".join(word_as_deque))
    word_as_deque.appendleft(word_as_deque.pop())

## output:
Abobus
sAbobu
usAbob
busAbo
obusAb
bobusA

Upvotes: 1

James
James

Reputation: 36598

You are splitting at an index in word, but then just putting the two pieces back together. Also, you are not use i to move the split index.

def rotation(word):
    length = len(word)
    for i in range(length):
        c = word[-i:] + word[:-i]
        print(c)

rotation('Abobus')
# prints:
Abobus
sAbobu
usAbob
busAbo
obusAb
bobusA

Upvotes: 1

Vikash
Vikash

Reputation: 194

I changed the logic of the program you have written.. This will work

word = "Abobus"

def rotation():
    print(word)
    n = len(word) - 1
    for _ in range(len(word)):
        c = word[n:] + word[0: n]
        n -= 1
        print(c)

rotation()

Upvotes: 0

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