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ios没有提供简单的汉字拼音排序方法，在网上看到了oc方法，这里写以下对应的swift方法
var stringCompareBlock: (String,String)->Bool = { (str1:String, str2:String) -> Bool in
var nsStr1 = str1 as NSString
var nsStr2 = str2 as NSString
var encode:NSStringEncoding = CFStringConvertEncodingToNSStringEncoding(CFStringEncoding(CFStringEncodings.GB_18030_2000.rawValue))
var temp1:NSString = nsStr1.stringByAddingPercentEscapesUsingEncoding(encode)!
var temp2:NSString = nsStr2.stringByAddingPercentEscapesUsingEncoding(encode)!
return temp1.compare(temp2) == NSComparisonResult.OrderedAscending
}
oc的方法链接如下：
http://bbs.9ria.com/thread-230144-1-1.html
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原文地址：http://www.cnblogs.com/breezemist/p/4398321.html
