public void test2() {
int[] a = new int[50];
int size = 1;
point:
while(true) {
int b = (int)(Math.random()*100 + 1);
for(int i=0; i<size; i++) {
if(b == a[i]) {
continue point;
}
}
a[size-1] = b;
if(size == 50) {
break;
}
size ++ ;
}
Arrays.sort(a);
for(int i=0; i<50; i++) {
System.out.println(a[i]);
}
}
int[] a = new int[50];
int size = 1;
point:
while(true) {
int b = (int)(Math.random()*100 + 1);
for(int i=0; i<size; i++) {
if(b == a[i]) {
continue point;
}
}
a[size-1] = b;
if(size == 50) {
break;
}
size ++ ;
}
Arrays.sort(a);
for(int i=0; i<50; i++) {
System.out.println(a[i]);
}
}
import java.util.ArrayList;
import java.util.HashMap;public class GenerateRandomNumer
{ public GenerateRandomNumer()
{
} public ArrayList returnRandaomDigit()
{
ArrayList RandomdigitList = new ArrayList();
HashMap HP = new HashMap();
for(int i = 0; i < 5; i++)
{
int Randomdigit = (int)(Math.random() * 50 + 1);
RandomdigitList.add(Integer.valueOf(Randomdigit));
System.out.println(Randomdigit);
} for(int j = 0; j < RandomdigitList.size(); j++)
{
HP.put(RandomdigitList.get(j), RandomdigitList.get(j));
} if(HP.size() > 4)
{
return RandomdigitList;
} else
{
return returnRandaomDigit();
}
} public ArrayList returnLastRandaomDigit()
{
ArrayList RandomdigitList = new ArrayList();
HashMap HP = new HashMap();
for(int i = 0; i < 2; i++)
{
int Randomdigit = (int)(Math.random() * 12 + 1);
RandomdigitList.add(Integer.valueOf(Randomdigit));
System.out.println(Randomdigit);
} for(int j = 0; j < RandomdigitList.size(); j++)
{
HP.put(RandomdigitList.get(j), RandomdigitList.get(j));
} if(HP.size() > 1)
{
return RandomdigitList;
} else
{
return returnLastRandaomDigit();
}
} public static void main(String args[])
{
GenerateRandomNumer n = new GenerateRandomNumer();
System.out.println((new StringBuilder()).append("the result is ").append(n.returnLastRandaomDigit()).toString());
}
}
for (int i = 0; i < a.length; i++) {
a[i]=i;
}
for (int i = 0; i < a.length; i++) {
int r = (int)(Math.random()*50);
int t = a[0];
a[0] = a[r];
a[r] = t;
}
int temp;
int[] arr = new int[50];
int count = 0;
do {
temp = random();
if (!check(arr, temp)) {
arr[count] = temp;
count++;
}
} while (count < 50);
Arrays.sort(arr);
for (int i = 0; i < arr.length; i++) {
System.out.println("arr=" + arr[i]);
}
}
public static int random() {
return (int) (Math.random() * 100);
}
public static boolean check(int[] arr, int temp) {
for (int i = 0; i < arr.length; i++) {
if (arr[i] == temp) {
return true;
}
}
return false;
}
}
public class TreeSetTest {
public static void main(String[] args){
Set<Integer> set = new TreeSet<Integer>();
while(set.size()<50){
set.add((int)(Math.random()*100));
}
for(int x : set){
System.out.println(x);
}
System.out.println(set.size());
}
}