ex6.3: Fix InterceptWith and DifferenceWith

torbiak · Apr 19, 2023 · 914da8d · 914da8d
1 parent fdd89d9
commit 914da8d
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/ex6.3/intset.go b/ex6.3/intset.go
@@ -49,19 +49,18 @@ func (s *IntSet) IntersectWith(t *IntSet) {
 	for i, tword := range t.words {
 		if i < len(s.words) {
 			s.words[i] &= tword
-		} else {
-			s.words = append(s.words, tword)
 		}
 	}
+	for i := len(t.words); i < len(s.words); i++ {
+		s.words[i] = 0
+	}
 }
 
 // Set s to the difference of s and t.
 func (s *IntSet) DifferenceWith(t *IntSet) {
 	for i, tword := range t.words {
 		if i < len(s.words) {
 			s.words[i] &^= tword
-		} else {
-			s.words = append(s.words, tword)
 		}
 	}
 }