说明：  the whole source code for this example using the k=3 and the initial means are (2, 10) (5 ,8) and (1, 2) and the the following are the points. piont A1 (2, 10) A2 (2, 5) A3 (8, 4) A4 (5, 8) A5 (7, 5) A6 (6, 4) A7 (1, 2) A8 (4, 9)