如何在NSString中找到子字符串的最后一次出现?


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我如何才能在另一个NSString中最后一次出现NSString?例如,在“ abc def ghi abc def ghi”中,我想找到第二个“ abc”而不是第一个的索引。我知道我可以用一堆rangeOfStrings做到这一点,但是已经有一个函数了吗?

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