Given an array Arr[] of N integers and a positive integer K. The task is to cyclically rotate the arrayclockwise by K.Note: Keep the first position of the array unaltered.
Question
Given an array Arr[] of N integers and a positive integer K. The task is to cyclically rotate the arrayclockwise by K.Note: Keep the first position of the array unaltered.
Solution 1
Here is a step-by-step solution in Python:
- First, we need to define the function that takes an array and a positive integer K as input.
def rotate(arr, k):
- Then, we need to handle the case where K is larger than the length of the array. We can do this by taking the modulus of K with the length of the array.
k = k % len(arr)
- Now, we need to rotate the array. We can do this by slicing the array at the Kth position from the end and swapping the two halves.
arr = arr[-k:] + arr[:-k]
- Finally, we need to return the rotated array.
return arr
Here is the complete function:
def rotate(arr, k):
k = k % len(arr)
arr = arr[-k:] + arr[:-k]
return arr
This function will cyclically rotate the array clockwise by K, keeping the first position of the array unaltered.
Solution 2
Here is a step-by-step solution in Python:
- First, we need to define the function that takes an array and a positive integer K as input.
def rotate(arr, k):
- Then, we need to handle the case where K is larger than the length of the array. We can do this by taking the modulus of K with the length of the array.
k = k % len(arr)
- Now, we need to rotate the array. We can do this by slicing the array at the Kth position from the end and swapping the two halves.
arr = arr[-k:] + arr[:-k]
- Finally, we need to return the rotated array.
return arr
The complete function looks like this:
def rotate(arr, k):
k = k % len(arr)
arr = arr[-k:] + arr[:-k]
return arr
You can call this function with an array and a positive integer K to rotate the array clockwise by K. Note that the first position of the array is unaltered because the rotation is cyclic.
Similar Questions
RotationGiven an array Arr[] of N integers and a positive integer K. The task is to cyclically rotate the arrayclockwise by K.Note: Keep the first position of the array unaltered.Constraints:Constraints1 < N <=100-100 <= Arr[i] <=1001 <=K <=100Input format for testingThe candidate should write the code to accept the inputs separated by a new line.First Input: Accept a single positive integer value for N representing the size of Arr[]Second Input: Accept N number of integer values separated by a new line, as elements of Arr[]Third input: Accept a single positive integer value for K representing the number of rotations.Output format for testingThe output must be N integer numbers separated by a single space character.Additional messages in the output will result in the failure of test cases.Example:Input5 -- Value of N{10, 20, 30, 40, 50} -- Elements ofArr[]2 -- Value of KOutput40 50 10 20 30Explanation:Arr[] = {10, 20, 30, 40, 50} and K = 2 (Two cyclical rotations)After 1st rotation = {10, 50, 20, 30, 40}After 2nd rotation = {10, 40, 50, 20, 30}
A left rotation operation on an array of size shifts each of the array's elements unit to the left. Given an integer, , rotate the array that many steps left and return the result.ExampleAfter rotations, .Function DescriptionComplete the rotateLeft function in the editor below.rotateLeft has the following parameters:int d: the amount to rotate byint arr[n]: the array to rotateReturnsint[n]: the rotated arrayInput FormatThe first line contains two space-separated integers that denote , the number of integers, and , the number of left rotations to perform.The second line contains space-separated integers that describe .ConstraintsSample Input5 41 2 3 4 5Sample Output5 1 2 3 4ExplanationTo perform left rotations, the array undergoes the following sequence of changes:
To rotate an array to the right by K positions, you would:
Implement a function that returns an updated array with 1 left rotation on an array of integersrotateLeft([1,2,3,4]) // returns [2,3,4,1]
Suppose an array of length n sorted in ascending order is rotated between 1 and n times. For example, the array nums = [0,1,2,4,5,6,7] might become:[4,5,6,7,0,1,2] if it was rotated 4 times.[0,1,2,4,5,6,7] if it was rotated 7 times.Notice that rotating an array [a[0], a[1], a[2], ..., a[n-1]] 1 time results in the array [a[n-1], a[0], a[1], a[2], ..., a[n-2]].Given the sorted rotated array nums of unique elements, return the minimum element of this array.You must write an algorithm that runs in O(log n) time.
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