Objective-c set

Set a set of first-level single-value objects, which can be variable or unchanged. Operations include: searching, adding, and deleting members in a set (common to variable sets), comparing two sets, and calculating the intersection and union of the two sets.

 

The following is a set of code:

# Import <Foundation/NSObject. h> <br/> # import <Foundation/NSSet. h> <br/> # import <Foundation/NSValue. h> <br/> # import <Foundation/NSArray. h> <br/> # import <Foundation/NSAID utoreleasepool. h> <br/> # import <Foundation/NSString. h> </p> <p> // Create an integer object <br/> # define upload BJ (v) [NSNumber numberWithInteger: v] </p> <p> // Add a print method to NSSet with the Pringing category </p> <p> @ interface NSSet (Printing) <br/>-(void) print; <br/> @ end </p> <p> @ implementation NSSet (Printing) <br/>-(void) print <br/>{< br/> printf ("{"); </p> <p> for (int I = 0; I <[self allObjects] count]; I ++) <br/> {<br/> printf ("% Ii", (long) [[self allObjects] objectAtIndex: I] integerValue]); <br/>}< br/> // for (NSNumber * element in self) <br/> // printf ("% Ii", (long) [element integerValue]); </p> <p> printf ("}/n "); <br/>}< br/> @ end </p> <p> int main (int argc, const char * argv []) <br/>{< br/> nutoreleasepool * pool = [[nutoreleasepool alloc] init]; </p> <p> NSMutableSet * set1 = [NSMutableSet setWithObjects: <br/> BJ (1), BJ (3), BJ (5), BJ (10), nil]; </p> <p> NSMutableSet * set2 = [NSMutableSet setWithObjects: <br/> describj (-5), describj (100), describj (3), describj (5 ), nil]; </p> <p> NSMutableSet * set3 = [NSMutableSet setWithObjects: <br/> describj (12), describj (200), describj (3), nil]; </p> <p> NSLog (@ "set1:"); <br/> [set1 print]; <br/> NSLog (@ "set2 :"); <br/> [set2 print]; </p> <p> // integrity test <br/> if ([set1 is1_toset: set2] = YES) <br/> NSLog (@ "set1 equals set2"); <br/> else <br/> NSLog (@ "set1 is not equal to set2 "); </p> <p> // Membership test </p> <p> if ([set1 containsObject: INTOBJ (10)] = YES) <br/> NSLog (@ "set1 contains 10"); <br/> else <br/> NSLog (@ "set1 does not contain 10 "); </p> <p> if ([set2 containsObject: INTOBJ (10)] = YES) <br/> NSLog (@ "set2 contains 10 "); <br/> else <br/> NSLog (@ "set2 does not contain 10 "); </p> <p> // add and remove objects from mutable set set1 <br/> [set1 addObject: describj (4)]; <br/> [set1 removeObject: describj (10)]; <br/> NSLog (@ "set1 after adding 4 and removing 10:"); <br/> [set1 print]; </p> <p> // get intersection of two sets <br/> [set1 intersectSet: set2]; <br/> NSLog (@ "set1 intersect set2 :"); <br/> [set1 print]; </p> <p> // union of two sets <br/> [set1 unionSet: set3]; <br/> NSLog (@ "set1 union set3:"); <br/> [set1 print]; </p> <p> [pool drain]; <br/> return 0; </p> <p >}< br/>