Otherwise I'm going to check to see is the first and last, there's that - 1 indexing, is the first and last element of the string the same?
是第一个还是最后一个,这就是这边-1的索引内容,这个字符串的第一个,和最后一个的内容是否相同呢?
By saying first element remember we start at as the initial indexing point.
我们说的第一个元素指的是,最初的开始索引点。
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