/****************************************************************************** * Compilation: javac Rolls.java * Execution: java Rolls n * Dependencies: Counter.java StdRandom.java StdOut.java * * Simulate the rolling of n 6-sided dice. * * % java Rolls 1000000 * 167308 1s * 166540 2s * 166087 3s * 167051 4s * 166422 5s * 166592 6s * ******************************************************************************/ public class Rolls { public static void main(String[] args) { int n = Integer.parseInt(args[0]); int SIDES = 6; // initialize counters Counter[] rolls = new Counter[SIDES+1]; for (int i = 1; i <= SIDES; i++) { rolls[i] = new Counter(i + "s"); } // flip dice for (int j = 0; j < n; j++) { int result = StdRandom.uniformInt(1, SIDES+1); rolls[result].increment(); } // print results for (int i = 1; i <= SIDES; i++) { StdOut.println(rolls[i]); } } }