?? Day #53 of My 365 Days Coding Challenge!

?? Day #53 of My 365 Days Coding Challenge!

?? A Personal Reflection:

Ever tried a circular queue in real life? Think of people standing in a line, and the first person moves to the end, shifting everyone forward. That’s exactly what rotating a linked list feels like!

?? What I Did Today:

I wrote a function to rotate a linked list by K positions. This means shifting nodes so that the K-th node becomes the new head.

?? Key Learning:

  • Turning the list into a cycle helps avoid unnecessary loops.
  • Using k % length ensures we don’t rotate more than needed.
  • Traversing length - k steps gives us the new head efficiently.

? Extra Touch:

? Handles edge cases like k = 0 or k > length properly.

? Efficient—traverses the list only a couple of times!

? No extra space used—just smart pointer manipulation.

?? Your Turn:

Modify this function to rotate the list to the left instead of the right!


#365DaysOfCode #CodingChallenge #LinkedList #Algorithm

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