iOS小技能:参数名ASCII码从小到大排序、对象数组排序

/**
 
 递归
 
 - 处理key对应的Value是字典的情况

     request body参数名ASCII码从小到大排序（字典序），
 使用URL键值对的格式拼接成字符串    (key1=value1&key2=value2…）

 */
+ (NSString *)sortedDictionary:(NSMutableDictionary *)originParam {
    
    NSDictionary *dict = originParam;
    

    NSMutableString *contentString =[NSMutableString string];

    NSArray *keys = [dict allKeys];
    

    //按字母顺序排序

    NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

        return [obj1 compare:obj2 options:NSNumericSearch];///*options:NSNumericSearch Added in 10.2; Numbers within strings are compared using numeric value, that is, Foo2.txt < Foo7.txt < Foo25.txt; only applies to compare methods, not find */

    }];

    //拼接字符串

    for (NSString *categoryId in sortedArray) {

#pragma mark - ******** todo value区分数组[,]、字符串、字段对象{}
        

        id  categoryIdV = [dict objectForKey:categoryId];
        
        
//
        if( [categoryIdV isKindOfClass:NSString.class]){
            

        
        }
        else         if( [categoryIdV isKindOfClass:NSDictionary.class]){
            
            
            categoryIdV = [self sortedDictionary:categoryIdV];
            
            categoryIdV = [NSString stringWithFormat:@"%@%@%@",@"{",categoryIdV,@"}"];
            
            
            
        }
        // 数组就[]
        
        else         if( [categoryIdV isKindOfClass:NSArray.class]){
            

            
            categoryIdV =   [self sortedDictionaryArr:categoryIdV];
            
            
            
        }

        
        
        if ([contentString length] <= 0) {
            //第一个参数
        }else{
            [contentString appendString:@"&"];
        }
        
        
        [contentString appendFormat:@"%@=%@", categoryId,categoryIdV ];
        
        


    }

    
    NSLog(@"%@",contentString);
    return contentString;
}

//2.按照日期进行分组展示
 
//     重新按照日期进行分组组织数据
 
//     找出不重复的日期
 
    /**
  对象操作:
     针对数组的情况
     @distinctUnionOfObjects：返回指定属性去重后的值的数组
 
     @unionOfObjects：返回指定属性的值的数组，不去重
 
     属性的值不能为空，否则产生异常。
 
 
*/
 
    //1）取出日期分组 
    NSArray *arDistinct = [maTemp valueForKeyPath:@"@distinctUnionOfObjects.strDateCreated"];//maTemp是一些含有日期属性的对象集合
    //2）构建排序规则NSComparator
    NSComparator cmptr = ^(id obj1, id obj2){
        NSString *strData1 = obj1;
        NSString *strData2 = obj2;
        NSComparisonResult ret = [strData1 compare:strData2];
        return ret;
    }; 
//     3）按数字从小到大进行排序(将最新的数据显示在前面)
 
    NSArray  *arSorted = [arDistinct sortedArrayUsingComparator:cmptr];
    arSorted = arSorted.reverseObjectEnumerator.allObjects;//顺序取反
 
    NSPredicate *predicate = nil;
 
//     4）按照日期进行分组
    for (NSString *strDateCreated in arSorted)
    {
 
        predicate = [NSPredicate predicateWithFormat:@"strDateCreated == %@", strDateCreated];
 
        NSArray *arFiltered = [maTemp filteredArrayUsingPredicate:predicate];//以一定的条件（特定日期）过滤maTemp数组，即进行大数据搜索。      
 
        OrderQueryGroupData *data = [OrderQueryGroupData alloc];
        data.strDateCreated = strDateCreated;
        data.maOrderData = [NSMutableArray arrayWithArray:arFiltered];
        data.maOrderDataF = [IPOrderDataFrame frameListWith:data.maOrderData];
        [self.maOrderQuery addObject:data];
 
    }

+(NSString*)POInamebyArr:(NSArray*)arr{
    
    // 返回距离目标地址最近的POI:对元素根据distance属性进行排序，返回第一个(distance当前POI与当前位置的距离)
    
    NSArray *sortedArray = [arr sortedArrayUsingComparator:^NSComparisonResult(TencentLBSPoi* obj1, TencentLBSPoi* obj2) {
        
        


        return [[NSNumber numberWithDouble:obj1.distance].description compare:[NSNumber numberWithDouble: obj2.distance].description options:NSNumericSearch];
        
        ///
        ///

    }];
    
//————————————————
//版权声明：本文为CSDN博主「iOS逆向」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
//原文链接：https://blog.csdn.net/z929118967/article/details/115242819
    TencentLBSPoi *firstObject = sortedArray.firstObject;
        
    return firstObject.name;
    
}

/**
 IOS中将对象数组按照时间戳排序
         weakSelf.viewModel.listModels=   [QCT_Common sortedArrayUsingObjectKey:@"createTime" arr:weakSelf.viewModel.listModels];

 */
- (NSMutableArray*)sortedArrayUsingObjectKey:(NSString*)key arr:(NSArray*)listModels{
    
    
    //1）取出日期分组
    
    NSString* valueForKeyPath = FMSTR(@"@distinctUnionOfObjects.%@",key);
    
    
    
    NSArray *arDistinct = [listModels valueForKeyPath:valueForKeyPath];
    
    
    //listModels是一些含有日期属性的对象集合
    //2）构建排序规则NSComparator
    NSComparator cmptr = ^(id obj1, id obj2){
        NSString *strData1 = obj1;
        NSString *strData2 = obj2;
        NSComparisonResult ret = [strData1 compare:strData2];
        return ret;
    };
//     3）按数字从小到大进行排序(将最新的数据显示在前面)
 
    NSArray  *arSorted = [arDistinct sortedArrayUsingComparator:cmptr];
    arSorted = arSorted.reverseObjectEnumerator.allObjects;//顺序取反
    NSMutableArray *newSorted_arr = [NSMutableArray array];
    
    //     4）按照日期进行分组
        for (NSString *strDateCreated in arSorted)
        {
     
            NSPredicate*   predicate = [NSPredicate predicateWithFormat:@"createTime == %@", strDateCreated];
            
            
     
            NSArray *arFiltered = [listModels filteredArrayUsingPredicate:predicate];//以一定的条件（特定日期）过滤maTemp数组，即进行大数据搜索。
            
            
            [newSorted_arr addObjectsFromArray:arFiltered];
            
            
            
     
        }
    
    return newSorted_arr;

//        ————————————————
//        版权声明：本文为CSDN博主「#公众号：iOS逆向」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
//        原文链接：https://blog.csdn.net/z929118967/article/details/115242819