send array of integers via xBee s1

Using Arduino Networking, Protocols, and Devices
24

The strtok() function will do the parsing for you. You only need one while loop to parse serialcom.

byte tokenCount = 0;
char +token = strtok(serialcom, ",");
while(token)
{
   data[tokenCount] = atoi(token);
   tokenCount++;
   token = strtok(NULL, ",");
}

Notice how I use tokenCount, rather than i and j. The name tokenCount clearly defines the purpose of the variable. i and j do not.