程序创建一个ArrayList，添加1到10的10个随机数，删除大于5的数 java

Posted 2020-12-05 qazliu

package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;

public class CreateArrayList {

	public static void main(String[] args) {
		List<Integer> newList = create(10);
		System.out.println(Arrays.toString(newList.toArray()));
		List<Integer> deleteList = delete(newList,5);
		System.out.println(Arrays.toString(deleteList.toArray()));
	}
	
	public static List<Integer> create(int size){
		Random r = new Random();
		List<Integer> list = new ArrayList<>();
		for(int i=0;i<size;i++) {
			int temp = r.nextInt(size);
			list.add(temp);
		}
		return list;
	}
	public static List<Integer> delete(List<Integer> needList,int flagIndex){
		for(int i=0;i<needList.size();) {
			if(needList.get(i).intValue()<flagIndex) {
				needList.remove(i);
				i=0;
			}else {
				i++;
			}
		}
		return needList;
	}
}