iOS 根据中文字符串排序出字母索引

Leonardo_Fibonacci

于 2020-11-19 11:00:02 发布

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分类专栏： iOS开发笔记

本文链接：https://blog.youkuaiyun.com/github_36850997/article/details/109804802

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该博客主要围绕iOS开发，讲述如何根据中文字符串排序出索引索引，涉及iOS开发中对字符串处理和排序的相关信息技术内容。

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// 传入字符串数组 返回索引字典
- (NSDictionary *)createCharacter:(NSMutableArray *)strArr
{
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    for (NSString *stringdict in strArr) {
        NSString *string = stringdict;
        if ([string length]) {
            NSMutableString *mutableStr = [[NSMutableString alloc] initWithString:string];
        
            if (CFStringTransform((__bridge CFMutableStringRef)mutableStr, 0, kCFStringTransformMandarinLatin, NO)) {
            }
            if (CFStringTransform((__bridge CFMutableStringRef)mutableStr, 0, kCFStringTransformStripDiacritics, NO)) {
                NSString *str = [NSString stringWithString:mutableStr];
                str = [str uppercaseString];
                NSMutableArray *subArray = [dict objectForKey:[str substringToIndex:1]];
                if (!subArray) {
                    subArray = [NSMutableArray array];
                    [dict setObject:subArray forKey:[str substringToIndex:1]];
                }
                [subArray addObject:string];
            }
        }
    }
    return dict;
}