数组---20161118
2016-11-18 本文已影响0人
海豚的小小海
数组的扩容：
ary = Arrays.copyOf( ary, ary.length + 1 );
ary[ ary.length - 1 ] = 100;```
数组的复制：
```java
int[ ] ary1 = {2,4,6,8,12,1};
int[ ] ary2 = ary1;
System.out.println(Arrays.toString(ary2));
int[ ] ary3 = new int[3];
System.arraycopy(ary1, 2, ary3, 0, 3);
System.out.println(Arrays.toString(ary3));```
