20. The routing method according to claim 18 , further comprising: finding whether the Lth and (L+1)th words of the routing string are the repetitive words; if the Lth and (L+1)th words of the routing string are the repetitive words, cloning the packet and the routing string to generate cloned packets and cloned routing strings; modifying target addresses of the cloned packets and the cloned routing strings; and transmitting each of the cloned packets to the other connected core according to the 2nd through (L+1)th words of the corresponding cloned routing string.
20. The routing method according to claim 18 , further comprising: finding whether the Lth and (L+1)th words of the routing string are the repetitive words; if the Lth and (L+1)th words of the routing string are the repetitive words, cloning the packet and the routing string to generate cloned packets and cloned routing strings; modifying target addresses of the cloned packets and the cloned routing strings; and transmitting each of the cloned packets to the other connected core according to the 2nd through (L+1)th words of the corresponding cloned routing string. 22. The routing method according to claim 20 , wherein the target address is modified according to a differential value between the length of the routing string and the addressing string length.