多维数组

Author: mthli

Part3/LotteryArray.java

@@ -0,0 +1,28 @@
+public class LotteryArray {
+ public static void main(String[] args) {
+ final int NMAX = 10;
+
+ int[][] odds = new int[NMAX + 1][];
+ for (int n = 0; n <= NMAX; n++) {
+ odds[n] = new int[n + 1];
+ }
+
+ for (int n = 0; n < odds.length; n++) {
+ for (int k = 0; k < odds[n].length; k++) {
+ int lotteryOdds = 1;
+ for (int i = 1; i <= k; i++) {
+ lotteryOdds = lotteryOdds * (n - i + 1) / i;
+ }
+ odds[n][k] = lotteryOdds;
+ }
+ }
+
+ for (int[] row : odds) {
+ for (int odd : row) {
+ System.out.printf("%4d", odd);
+ }
+ System.out.println();
+ }
+ }
+}
+