i find a bug

[qujinqiang]

i find a bug
in the resize method have a bug;
bug code is
System.arraycopy(used2, 0, used2, 0, allocSize);
right code is
System.arraycopy(used, 0, used2, 0, allocSize);

[colin0000007]

It's not a bug. the array named 'used' actually does not work.