我有一个像这样的数组:
arrayname[1] = "jacob";
arrayname[2] = "peter";
arrayname[3] = "jacob";
arrayname[4] = "nicholas";
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我想删除双jacob所以它会像
arrayname[1] = "jacob";
arrayname[2] = "peter";
arrayname[3] = "nicholas";
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我怎么做?