Rotate list to the left by k positions Dry Run in PYTHON

Rotate list to the left by k positions is an interactive PYTHON dry run visualizer from the Lists programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Rotate list to the left by k positions Program Code

# Rotate list left by k positions
arr = [1, 2, 3, 4, 5, 6, 7]
k = 3
print(f"Original: {arr}, rotate left by {k}")

# Method 1: Slicing
k = k % len(arr)  # handle k > len(arr)
rotated = arr[k:] + arr[:k]
print(f"Using slicing: {rotated}")

# Method 2: Manual rotation
arr2 = [1, 2, 3, 4, 5, 6, 7]
for _ in range(k):
    first = arr2.pop(0)
    arr2.append(first)
print(f"Manual rotation: {arr2}")

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