Logic Building/Phase 4 - Level 3: Transformation/Program

Rotate Right by 1

Rotate array right by one position.

Logic BuildingIntermediate

Logic Building

# Take array
n = int(input("Enter array size: "))
arr = []
for i in range(n):
    arr.append(int(input(f"Element {i+1}: ")))

# Rotate right
if len(arr) > 0:
    last = arr[-1]
    for i in range(len(arr) - 1, 0, -1):
        arr[i] = arr[i - 1]
    arr[0] = last

print(f"After right rotation: {arr}")

Output

Enter array size: 5
Element 1: 1
Element 2: 2
Element 3: 3
Element 4: 4
Element 5: 5
After right rotation: [5, 1, 2, 3, 4]

Shift all elements right, move last to start.

Key Concepts:

Save last element
Shift all elements right
Place last at start

Rotate Left by 1

Swap Alternate Elements