分别有两个集合{1,2,1,3,4,5,6,7},{1,2,3,8,9,7,10},求两个集合的差集、并集、交集
时间: 2024-03-18 21:35:55 浏览: 18
以下是两个集合的差集、并集和交集的演示:
1. 差集:
```python
set1 = {1, 2, 1, 3, 4, 5, 6, 7}
set2 = {1, 2, 3, 8, 9, 7, 10}
difference = set1 - set2
print("差集:", difference) # 输出:{4, 5, 6}
```
2. 并集:
```python
set1 = {1, 2, 1, 3, 4, 5, 6, 7}
set2 = {1, 2, 3, 8, 9, 7, 10}
union = set1 | set2
print("并集:", union) # 输出:{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
```
3. 交集:
```python
set1 = {1, 2, 1, 3, 4, 5, 6, 7}
set2 = {1, 2, 3, 8, 9, 7, 10}
intersection = set1 & set2
print("交集:", intersection) # 输出:{1, 2, 3, 7}
```
相关问题
集合1 2 3 4 和集合3 4 5 6求两集合的并集,交集和差集,用java语音
下面是用 Java 语言实现求两个集合的并集、交集和差集的代码:
```java
import java.util.*;
public class SetOperations {
public static void main(String[] args) {
Set<Integer> set1 = new HashSet<>(Arrays.asList(1, 2, 3, 4));
Set<Integer> set2 = new HashSet<>(Arrays.asList(3, 4, 5, 6));
// 求并集
Set<Integer> union = new HashSet<>(set1);
union.addAll(set2);
System.out.println("Set union: " + union);
// 求交集
Set<Integer> intersection = new HashSet<>(set1);
intersection.retainAll(set2);
System.out.println("Set intersection: " + intersection);
// 求差集
Set<Integer> difference1 = new HashSet<>(set1);
difference1.removeAll(set2);
System.out.println("Set difference (set1 - set2): " + difference1);
Set<Integer> difference2 = new HashSet<>(set2);
difference2.removeAll(set1);
System.out.println("Set difference (set2 - set1): " + difference2);
}
}
```
输出结果为:
```
Set union: [1, 2, 3, 4, 5, 6]
Set intersection: [3, 4]
Set difference (set1 - set2): [1, 2]
Set difference (set2 - set1): [5, 6]
```
对于两个集合s1和s2,s1 < s2的意思是?
`s1 < s2` 表示集合 `s1` 是集合 `s2` 的真子集,也就是说,集合 `s1` 中的所有元素都是集合 `s2` 中的元素,并且集合 `s2` 中还有其他的元素。可以使用 `<` 运算符来比较两个集合的大小关系,例如:
```
s1 = {1, 2, 3}
s2 = {1, 2, 3, 4, 5}
if s1 < s2:
print("s1 是 s2 的真子集")
```
输出结果为:
```
s1 是 s2 的真子集
```
注意,如果两个集合相等,则它们不是真子集关系,而是相等关系,可以使用 `==` 运算符进行比较。