danshan

    public static void main(String[] args) {
        int all = 1000000;
        Map<Integer, Integer> results = Maps.newHashMap();
        for (int i = 0; i < all; i++) {
            int id = chanceSelect(couponProbability);
            if (!results.containsKey(id)) {
                results.put(id, 0);
            }
            results.put(id, results.get(id) + 1);
        }

danshan

# This config file was created for myself (@dan). 
# You may want to add or remove some rules to make efficient use of the Internet. 

# This file depends on the proxy.conf which defines your own proxy.
# Your proxy.conf will look like this:
# ---- START ----
# #!PROXY-OVERRIDE:rules.conf
# [Proxy]
# Proxy = https,server.address,port,username,password
# ---- END ----

danshan

// In the latest version(12.0) of guava there will be a class named FluentIterable. 
// This class provides the missing fluent API for this kind of stuff.


final Collection<String> filtered = FluentIterable
    .from(tokens)
    .transform(new Function<String, String>() {
       @Override
       public String apply(final String input) {
         return input == null ? "" : input.trim();