// works identically with float[] and String[] 
int list[] = new list[3]; 
list[0] = 8; 
list[1] = 67; 
list[2] = 5; 
String formatted = join(list, ", "); 
// formatted now contains "8, 67, 5" 
 
// to format the number of digits used 
// the '3' means to pad with zeroes up to 3 digits 
String withzeroes = join(list, " ", 3); 
// withzeros now contains "008 067 005" 
 
// for floats, formatting is more complicated because 
// there are also digits after the decimal point. 
float f[] = new float[3]; 
f[0] = 1.3; 
f[1] = 92.8; 
f[2] = 0.7; 
// 3 digits on the left of the decimal point 
// 2 digits to the right of the decimal point 
String zerofloats = join(f, " ", 3, 2); 
// zerofloats now contains "001.30 092.80 007.70" 
 
// or if you don't want to pad the left-hand side 
// a zero will say to ignore and don't pad 
String lesspadding = join(f, " ", 0, 2); 
// lesspadding now contains "1.30 92.80 7.70"