NSMutableArray 특정 객체를 얻는 방법

Question

일요일 및 월요일 텍스트 객체가이 배열 목록에 있어야하고 다른 배열에서 가져 와서 저장하십시오. 다른 단어 날짜와 요일 이름을 가진 객체 가져 오기 배열에 저장하고 저장하십시오.

어떻게 도와 드릴까요? 나는 그렇게 시도했지만 정답을 얻지 못한다.

NSDateComponents *components; 
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; 
[dateFormat setDateFormat:@"dd-MM-yyyy"]; 

NSDate *startDate = [dateFormat dateFromString:@"25-11-2016"]; 
NSDate *endDate = [dateFormat dateFromString:@"7-12-2016"]; 

[dateFormat setDateFormat:@"dd-MM-yyyy, EEEE"]; 

components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit fromDate:startDate toDate:endDate options:0]; 

int days = [components day]; 



for (int x = 0; x <= days; x++) { 
    [mutable_ary addObject:[dateFormat stringFromDate:startDate]]; 
    NSLog(@"%@",[dateFormat stringFromDate:startDate]); 

    startDate = [startDate dateByAddingTimeInterval:(60 * 60 * 24)]; 

} 
NSLog(@"%@",mutable_ary); 

{ 
"25-11-2016, Friday", 
"26-11-2016, Saturday", 
"27-11-2016, Sunday", 
"28-11-2016, Monday", 
"29-11-2016, Tuesday", 
"30-11-2016, Wednesday", 
"01-12-2016, Thursday", 
"02-12-2016, Friday", 
"03-12-2016, Saturday", 
"04-12-2016, Sunday", 
"05-12-2016, Monday", 
"06-12-2016, Tuesday", 
"07-12-2016, Wednesday" 
} 

출력 :

{ 

"27-11-2016, Sunday", 
"28-11-2016, Monday", 
"04-12-2016, Sunday", 
"05-12-2016, Monday", 
} 

Answer 1

이 시도 :

NSMutableArray *arrList = [[NSMutableArray alloc]initWithObjects:@"25-11-2016, Friday", 
          @"26-11-2016, Saturday", 
          @"27-11-2016, Sunday", 
          @"28-11-2016, Monday", 
          @"29-11-2016, Tuesday", 
          @"30-11-2016, Wednesday", 
          @"01-12-2016, Thursday", 
          @"02-12-2016, Friday", 
          @"03-12-2016, Saturday", 
          @"04-12-2016, Sunday", 
          @"05-12-2016, Monday", 
          @"06-12-2016, Tuesday", 
          @"07-12-2016, Wednesday", nil]; 

NSMutableArray *result = [[NSMutableArray alloc]init]; 
for (id element in arrList){ 
    NSString *str = element; 
    if ([str containsString:@"Monday"] || [str containsString:@"Sunday"]){ 
     [result addObject:element]; 
    } 
} 

// print result 
NSLog(@"%@",result); 

Answer 2

NSArray *input = @[@"25-11-2016, Friday", 
        @"26-11-2016, Saturday", 
        @"27-11-2016, Sunday", 
        @"28-11-2016, Monday", 
        @"29-11-2016, Tuesday", 
        @"30-11-2016, Wednesday", 
        @"01-12-2016, Thursday", 
        @"02-12-2016, Friday", 
        @"03-12-2016, Saturday", 
        @"04-12-2016, Sunday", 
        @"05-12-2016, Monday", 
        @"06-12-2016, Tuesday", 
        @"07-12-2016, Wednesday"]; 

NSMutableArray *days = [NSMutableArray arrayWithArray: @[@"Sunday",@"Monday"]]; 
NSMutableArray *output = [NSMutableArray new]; 
for(NSString *day in days){ 
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF contains %@",day]; 
          NSArray *filtered = [input filteredArrayUsingPredicate:predicate]; 
    [output addObjectsFromArray:filtered]; 
} 

NSLog(@"%@",output);