Data commit

Task/Set/Objective-C/set.m

@@ -0,0 +1,57 @@
+#import <Foundation/Foundation.h>
+
+int main (int argc, const char *argv[]) {
+  @autoreleasepool {
+
+    NSSet *s1 = [NSSet setWithObjects:@"a", @"b", @"c", @"d", @"e", nil];
+    NSSet *s2 = [NSSet setWithObjects:@"b", @"c", @"d", @"e", @"f", @"h", nil];
+    NSSet *s3 = [NSSet setWithObjects:@"b", @"c", @"d", nil];
+    NSSet *s4 = [NSSet setWithObjects:@"b", @"c", @"d", nil];
+    NSLog(@"s1: %@", s1);
+    NSLog(@"s2: %@", s2);
+    NSLog(@"s3: %@", s3);
+    NSLog(@"s4: %@", s4);
+
+    // Membership
+    NSLog(@"b in s1: %d", [s1 containsObject:@"b"]);
+    NSLog(@"f in s1: %d", [s1 containsObject:@"f"]);
+
+    // Union
+    NSMutableSet *s12 = [NSMutableSet setWithSet:s1];
+    [s12 unionSet:s2];
+    NSLog(@"s1 union s2: %@", s12);
+
+    // Intersection
+    NSMutableSet *s1i2 = [NSMutableSet setWithSet:s1];
+    [s1i2 intersectSet:s2];
+    NSLog(@"s1 intersect s2: %@", s1i2);
+
+    // Difference
+    NSMutableSet *s1_2 = [NSMutableSet setWithSet:s1];
+    [s1_2 minusSet:s2];
+    NSLog(@"s1 - s2: %@", s1_2);
+
+    // Subset of
+    NSLog(@"s3 subset of s1: %d", [s3 isSubsetOfSet:s1]);
+
+    // Equality
+    NSLog(@"s3 = s4: %d", [s3 isEqualToSet:s4]);
+
+    // Cardinality
+    NSLog(@"size of s1: %lu", [s1 count]);
+
+    // Has intersection (not disjoint)
+    NSLog(@"does s1 intersect s2? %d", [s1 intersectsSet:s2]);
+
+    // Adding and removing elements from a mutable set
+    NSMutableSet *mut_s1 = [NSMutableSet setWithSet:s1];
+    [mut_s1 addObject:@"g"];
+    NSLog(@"mut_s1 after adding g: %@", mut_s1);
+    [mut_s1 addObject:@"b"];
+    NSLog(@"mut_s1 after adding b again: %@", mut_s1);
+    [mut_s1 removeObject:@"c"];
+    NSLog(@"mut_s1 after removing c: %@", mut_s1);
+
+  }
+  return 0;
+}