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本题中定义了长度为20的一维整型数组a，并将数组元素的下标值赋给数组元素，最后打印输出数组中下标为奇数的元素。
public class java1
public static void main(String[] args)
int a[]=______;
int i;
for(______; i++)
a[i]=i;
for(i=0; i＜20; i++)
if(______)
System. out. print("a["+i+"]="+a[i]+",");


【参考答案】

第1处：new int[20]
第2处：i=0; i＜20
第3处：i%2!=0
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