src/main/java/org/vanilladb/bench/benchmarks/tpcc/TpccValueGenerator.java
public String makeLastName(int number) {
		if (number < 0 && number > TpccConstants.NUM_DISTINCT_CLAST - 1)
			throw new IllegalArgumentException();
		int indicies[] = { number / 100, (number / 10) % 10, number % 10 };
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < indicies.length; ++i) {
			sb.append(TOKENS[indicies[i]]);
		}
		return sb.toString();
	}
public String makeLastName(int number) {
		if (number < 0 && number > TpccConstants.NUM_DISTINCT_CLAST - 1)
			throw new IllegalArgumentException();
		int indicies[] = { number / 100, (number / 10) % 10, number % 10 };
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < indicies.length; ++i) {
			sb.append(TOKENS[indicies[i]]);
		}
		return sb.toString();
	}
Return a last name as defined by TPC-C 4.3.2.3.