29選7的簡單實現

import java.util.Arrays;

public class T {
  public static void main(String args[]) {
    int[] a = new int[7];
    int s = 0;
    int i;
    OUT: while (s < 7) {
      a[s] = (int) (Math.random() * 29) + 1;
      for (i = 0; i < s; i++) {
        if (a[i] == a[s]) {
          break OUT;
        }
      }
      s++;
    }
    System.out.println(Arrays.toString(a));
  }
}