Image Translation

Problem

Shift a 2D image by (dy, dx) using zero fill.

Positive dy moves content down and positive dx moves it right; pixels shifted outside the image are dropped and the exposed area is filled with 0. Return an image with the same shape; dy and dx may be negative.

Hint

Read from (i - dy, j - dx) and write 0 when the source falls outside.

Test cases

case 1

in: [[[1,2],[3,4]],1,1]

expected: [[0,0],[0,1]]

case 2

in: [[[1,2],[3,4]],-1,0]

expected: [[3,4],[0,0]]

case 3

in: [[[1,2],[3,4]],0,-3]

expected: [[0,0],[0,0]]

case 4

in: [[[1,2,3],[4,5,6],[7,8,9]],1,-1]

expected: [[0,0,0],[2,3,0],[5,6,0]]

Starter codePython

def translate(image, dy, dx):
    # Your code here
    pass

4 test cases · run your code against them in the editor