Q4) Using the following Algorithm to fill the shape: (5) Flood-fill (node, target-color, replacement-color): 1. If target-color is equal to replacement-color, return 2. If the color of node is not equal to target-color, return. 3. Set the color of node to replacement-color 4. Perform Flood-fill (one step to the south of node, target-color replacement-colon Perform Flood-fill (one step to the north of node, target-color, replacement-color) Perform Flood-fill (one step to the west of node, target-color, replacement-colon Perform Flood-fill (one step to the east of node, target-color, replacement-colon) 5. Return 1 Q4) Using the following Algorithm to fill the shape: (5) Flood-fill (node, target-color, replacement-color): 1. If target-color is equal to replacement-color, return 2. If the color of node is not equal to target-color, return. 3. Set the color of node to replacement-color 4. Perform Flood-fill (one step to the south of node, target-color replacement-colon Perform Flood-fill (one step to the north of node, target-color, replacement-color) Perform Flood-fill (one step to the west of node, target-color, replacement-colon Perform Flood-fill (one step to the east of node, target-color, replacement-colon) 5. Return 1