Robot in Circle - Company-specific OAs / Amazon OA

Problems
1

https://algo.monster/problems/amazon_oa_robot_in_circle

2

The implementation does not follow the leetcode assignement.
Leetcode assignement says possible movements are G,L,R.
And here in the implementation you are dealing with S,R

3

Here’s the updated version.

def is_robot_bounded( instructions: str) -> bool:
   # Current position.
   x, y = 0 , 0
   # Direction
   dx, dy = 0 , 1 # starts pointing to the north
   for I in instructions:
      if i == 'L':
         dx, dy = -dy, dx #  0, 1 -> -1, 0, -> 0, -1
     if I == 'R':
         dx, dy = dy, -dx #  0, 1 -> 1, 0 -> 0, -1
    if  i == 'G':
         x = x + dx
         y = y + dy

    return (x, y) == 0 or (dx, dy) != (0, 0)
4

The return statement should be:

    return (x, y) == (0, 0) or (dx, dy) != (0, 1)

def is_robot_bounded(instructions: str) -> bool:
    # Current position
    x, y = 0, 0

    # Direction
    dx, dy = 0, 1  # starts pointing to the north

    for i in instructions:
        if i == "L":
            dx, dy = -dy, dx  #  0, 1 -> -1, 0, -> 0, -1
        elif i == "R":
            dx, dy = dy, -dx  #  0, 1 -> 1, 0 -> 0, -1
        elif i == "G":
            x = x + dx
            y = y + dy

    return (x, y) == (0, 0) or (dx, dy) != (0, 1)
5

You are right!, thanks!