for循环

Author: mthli

Part3/LotteryOdds.java

@@ -0,0 +1,22 @@
+import java.util.*;
+
+public class LotteryOdds {
+ public static void main(String[] args) {
+ Scanner in = new Scanner(System.in);
+
+ System.out.print("How many numbers do you need to draw? ");
+ int k = in.nextInt();
+
+ System.out.print("What is the highest number you can draw? ");
+ int n = in.nextInt();
+
+ int lotteryOdds = 1;
+ for (int i = 1; i <= k; i++) {
+ lotteryOdds = lotteryOdds * (n - i + i) / i;
+ }
+
+ System.out.println("Your odds are 1 in " + lotteryOdds + ". Good luck!");
+ }
+}
+
+