public class MyFirstApp
{
public static void main(String[] args)
{
System.out.print("Hello world")
}
}
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import java.util.LinkedListimport java.util.List
import java.util.Random
public class Group {
public static void main(String[] args) {
List<Integer> l = new LinkedList<Integer>()
int[][] group = new int[4][7]
Random r = new Random()
for (int i = 0 i < 31 i++)
l.add(new Integer(i + 1))
for (int i = 0 i < 4 i++) {
for (int j = 0 j < 7 j++) {
int k = r.nextInt(l.size())
group[i][j] = l.get(k)
l.remove(k)
}
}
for (int i = 0 i < 4 i++) {
System.out.print("Group " + (i + 1) + ": ")
for (int j = 0 j < 7 j++) {
System.out.print(group[i][j] + " ")
}
System.out.println()
}
// 剩下分组
String groups = ""
for(Integer _tem : l) {
groups += _tem + " "
}
System.out.print("Group " + "5" + ": " + groups)
}
}
代码如下:
public class HelloWorld {
public static void main(String []args) {
int a = 3, b = 7
System.out.println("Hello World!")
}
public static int f(int a, int b){
return a*a + a*b + b*b
}
}
结果如下: