Python Program for Array Rotation Using temp array
Write a function rotate(ar[], d, n) that rotates arr[] of size n by d elements.
Rotation of the above array by 2 will make array
Input arr[] = [1, 2, 3, 4, 5, 6, 7], d = 2, n =7 1) Store d elements in a temp array temp[] = [1, 2] 2) Shift rest of the arr[] arr[] = [3, 4, 5, 6, 7, 6, 7] 3) Store back the d elements arr[] = [3, 4, 5, 6, 7, 1, 2]
Python3
# function to rotate array by d elements using temp array def rotateArray(arr, n, d): temp = [] i = 0 while (i < d): temp.append(arr[i]) i = i + 1 i = 0 while (d < n): arr[i] = arr[d] i = i + 1 d = d + 1 arr[:] = arr[: i] + temp return arr # Driver function to test above function arr = [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ] print ( "Array after left rotation is: " , end = ' ' ) print (rotateArray(arr, len (arr), 2 )) |
Output
Array after left rotation is: [3, 4, 5, 6, 7, 1, 2]
Time complexity: O(n)
Auxiliary Space: O(d)
Python Program for Array Rotation
Here we are going to see how we can rotate array with Python code.
Array Rotation:
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