importjava.util.Set;importjava.util.HashSet;publicclassSetDifferenceExample{publicstaticvoidmain(String[]args){// 创建 Set ASet<Integer>setA=newHashSet<>();setA.add(1);setA.add(2);setA.add(3);// 创建 Set BSet<Integer>setB=newHashSet<>();setB.add(2);setB.add(3);setB.add(4);// ...
1. 2. 步骤6:将第二个Set中除交集外的元素添加到结果集中 Set<String>difference2=newHashSet<>(set2);difference2.removeAll(intersection);Set<String>result=newHashSet<>(difference1);result.addAll(difference2); 1. 2. 3. 4. 完整示例 importjava.util.*;publicclassCompareSets{publicstaticvoidmain(...
Fundamental difference between List and Set in Java is allowing duplicate elements. List in Java allows duplicates while Set does not allow any duplicate.
@RequestMapping(value = "/differenceFriend", method = RequestMethod.GET) public Set differenceFriend(String user) { return setOperations.difference(A_FRIEND_KEY, B_FRIEND_KEY); } 相同的redis命令如下 代码语言:txt AI代码解释 SDIFF friend:a friend:b 所有的好友 命令介绍 页面如下,点击所有的好友按钮...
List and Set both are interfaces. They both extends Collection interface. In this post we are discussing the differences between List and Set interfaces in java. List Vs Set 1) List is an ordered collection it maintains the insertion order, which means u
Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effectively modifies this set so that its value is theasymmetric set differenceof the two sets. ...
Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effectively modifies this set so that its value is theasymmetric set differenceof the two sets. ...
可以用in判断一个元素是不是在集合里: 返回“True”说明在集合里,返回“False”说明不在集合里。 还有一个快速创建集合的方法: 用set()方法可以把一个字符串按字母拆分成一个集合。 还以可以进行集合之间的运算: a - b 表示元素在a中,但是不在b中的集合 ...
一、列表(相当于java的数组) 列表是有序的集合 列表的定义 List (列表) 是 Python 中使⽤ 最频繁 的数据类型,在其他语⾔中通常叫做 数组 专⻔⽤于存储 ⼀串 数据,存储的数据 称为 元素 列表⽤ [] 定义,元素 之间使⽤ , 分隔 列表的 索引 从 0 开始 ...
In [5]: # 添加～指定位置插入 infos_list.insert(0,"Python") print(infos_list) # 列表嵌套(后面会有扩展) temp_list=["test1","test2"] infos_list.insert(0,temp_list) print(infos_list) ['Python', 'C#', 'JavaScript', 'Java'] [['test1', 'test2'], 'Python', 'C#', 'JavaScript...