OC 十六进制字符串转二进制字符串

//十六进制转换为二进制 + (NSString *)getBinaryByHex:(NSString *)hex { NSMutableDictionary *hexDic = [[NSMutableDictionary alloc] initWithCapacity:16]; [hexDic setObject:@"0000" forKey:@"0"]; [hexDic

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