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Tomyail/getLegalIndexFromArray.as

Created January 10, 2013 12:32
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(i%3+3)%3 i是任意整型,3是数组长度,得到的结果都是一个对于该数组合法的索引
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getLegalIndexFromArray.as
public function getLegalIndexFromArray(index,arrayLength):int
{
return (index%arrayLength+arrayLength)%arrayLength;
}
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