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或者你应该在intU[1]=...之前加个if(cellID > -1).
@李东岳 感谢李老师的回复,前段时间做了其他的事情,就搁置了这个。哈哈 这个问题解决了,是因为边界条件的设置。 另外请教李老师另外的问题: