java 将随机数放入数组列表java
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/14180419/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
put random number in the array list java
提问by Newbie Newbae
I'm trying to put all random number which I generated to the arraylist and print all the random number into single array
我正在尝试将我生成的所有随机数放入数组列表并将所有随机数打印到单个数组中
static int pick;
public static void main(String[] args) {
ArrayList al = new ArrayList();
Random rand = new Random();
for (int j = 0; j<10; j++)
{
pick = rand.nextInt(100);
al.add(pick);
System.out.println("Contents of al: " + al);
}
from the above function I got the result like this
从上面的函数我得到了这样的结果
Contents of al: [43]
Contents of al: [43, 44]
Contents of al: [43, 44, 3]
Contents of al: [43, 44, 3, 66]
Contents of al: [43, 44, 3, 66, 47]
Contents of al: [43, 44, 3, 66, 47, 24]
Contents of al: [43, 44, 3, 66, 47, 24, 12]
Contents of al: [43, 44, 3, 66, 47, 24, 12, 35]
Contents of al: [43, 44, 3, 66, 47, 24, 12, 35, 0]
Contents of al: [43, 44, 3, 66, 47, 24, 12, 35, 0, 85]
the expected output I want is just the last line of the above result
我想要的预期输出只是上述结果的最后一行
Contents of al: [43, 44, 3, 66, 47, 24, 12, 35, 0, 85]
anyone know how to do it?
有人知道怎么做吗？
回答by Hagai
If you want print the array when it is full take the println out of the loop.
如果您想在数组已满时打印数组，请将 println 移出循环。
Hope that answers your question
希望这能回答你的问题
static int pick;
public static void main(String[] args) {
ArrayList al = new ArrayList();
Random rand = new Random();
for (int j = 0; j<10; j++)
{
pick = rand.nextInt(100);
al.add(pick);
}
System.out.println("Contents of al: " + al);
}
