Data commit

Task/Symmetric-difference/Objective-C/symmetric-difference.m

@@ -0,0 +1,30 @@
+#import <Foundation/Foundation.h>
+
+int main(int argc, const char *argv[]) {
+  @autoreleasepool {
+
+    NSSet* setA = [NSSet setWithObjects:@"John", @"Serena", @"Bob", @"Mary", @"Serena", nil];
+    NSSet* setB = [NSSet setWithObjects:@"Jim", @"Mary", @"John", @"Jim", @"Bob", nil];
+
+    // Present our initial data set
+    NSLog(@"In set A: %@", setA);
+    NSLog(@"In set B: %@", setB);
+
+    // Get our individual differences.
+    NSMutableSet* notInSetA = [NSMutableSet setWithSet:setB];
+    [notInSetA minusSet:setA];
+    NSMutableSet* notInSetB = [NSMutableSet setWithSet:setA];
+    [notInSetB minusSet:setB];
+
+    // The symmetric difference is the concatenation of the two individual differences
+    NSMutableSet* symmetricDifference = [NSMutableSet setWithSet:notInSetA];
+    [symmetricDifference unionSet:notInSetB];
+
+    // Present our results
+    NSLog(@"Not in set A: %@", notInSetA);
+    NSLog(@"Not in set B: %@", notInSetB);
+    NSLog(@"Symmetric Difference: %@", symmetricDifference);
+
+  }
+  return 0;
+}