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有人来讨论技术吗？如何高效的将字符串中的大小写互换？

 4 years ago
source link: https://www.v2ex.com/t/640883
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程序员 - @GDC - 例如，输入 abcXYZhello123 输出 ABCxyzHELLO123 ；就是把字符串中的大写全换成小写、小写全换成大写。除了逐个字符判断+替换，还有什么更快速高效的方法吗？

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