SELECT Q.mem_id
FROM tb_mem_share Q,
tb_member Mb
WHERE Mb.mem_id = Q.mem_id
AND Q.share_num_from BETWEEN '42368' AND '42378'
SELECT *
FROM tb_mem_share
WHERE share_num_from >= 42368
import random
circlediameter = random.randint(1,99)
pi = 3.142
print("The circle diameter is",circlediameter," Find the area")
#find 4 possible answers
circleanswer1 = circlediameter/pi
circlea
String a []= {null,null,null,null,null};
//add array to arraylist
ArrayList<Object> choice = new ArrayList<Object>(Arrays.asList(a));
System.out.println(choice.size());
为什么ArrayList中choice的大小为5