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---
layout: default
class: Macro
title: average (';' LIST )*
summary: The average of a list, if no members exception is thrown
---
static String _average = "${average;<list>[;<list>...]}";
public String _average(String args[]) throws Exception {
verifyCommand(args, _sum, null, 2, Integer.MAX_VALUE);
List<String> list = toList(args, 1, args.length);
if (list.isEmpty())
throw new IllegalArgumentException("No members in list to calculate average");
double d = 0;
for (String s : list) {
double v = Double.parseDouble(s);
d += v;
}
return toString(d / list.size());
}
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