To rotate an array to the right by K positions, you would:
Question
To rotate an array to the right by K positions, you would:
Solution
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First, you need to determine the length of the array. Let's call this length 'n'.
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Next, calculate the actual number of rotations you need to perform. This is because rotating an array of length 'n' by 'n' positions results in the same array. So, you only need to rotate 'K mod n' times. Let's call this 'r'.
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Now, you need to reverse the entire array. This can be done in-place, i.e., without using any extra space.
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After reversing the entire array, reverse the first 'r' elements.
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Finally, reverse the remaining 'n-r' elements.
The array is now rotated to the right by 'K' positions.
Similar Questions
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