Sha256: 1b9d6fb49164faf22c2793ae09db76f91ed2f9fced7caeac4472db3678f55206
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Size: 1.76 KB
Versions: 396
Compression:
Stored size: 1.76 KB
Contents
#import <Foundation/Foundation.h>
#import "GradeSchoolExample.h"
@implementation GradeSchool
- (instancetype)init {
self = [super init];
if (self) {
self.db = [NSMutableDictionary dictionary];
}
return self;
}
- (void)addStudentWithName:(NSString *)name andGrade:(NSNumber *)grade {
NSMutableArray *studentsInGrade = [self studentsInGrade:grade];
[studentsInGrade addObject:name];
}
- (NSMutableArray *)studentsInGrade:(NSNumber *)grade {
NSMutableArray *studentsInGrade = [[self db] objectForKey:grade];
if (!studentsInGrade) {
studentsInGrade = [NSMutableArray array];
self.db[grade] = studentsInGrade;
}
return studentsInGrade;
}
- (NSDictionary *)sort {
NSMutableDictionary *sortedDB = [NSMutableDictionary dictionary];
[[self allGradesOrdered] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
sortedDB[obj] = [self studentsInGradeOrdered:obj];
}];
return sortedDB;
}
- (NSArray *)studentsInGradeOrdered:(NSNumber *)grade {
return [[self studentsInGrade:grade] sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
if ([obj1 isEqualToString:obj2]) {
return NSOrderedSame;
} else if (obj1 < obj2) {
return NSOrderedDescending;
}
return NSOrderedAscending;
}];
}
- (NSArray *)allGrades {
return [[self db] allKeys];
}
- (NSArray *)allGradesOrdered {
return [[self allGrades] sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
if ([obj1 isEqualToValue:obj2]) {
return NSOrderedSame;
} else if (obj1 < obj2) {
return NSOrderedDescending;
}
return NSOrderedAscending;
}];
}
@end
Version data entries
396 entries across 396 versions & 1 rubygems