personList.add(p); } } ); System.out.println(personList); List 的contains()方法底层实现使用对象的equals方法去比较的,其实重写equals()就好,但重写了equals最好将hashCode也重写了。 可以参见:http://stackoverflow.com/questions/30745048/how-to-remove-duplicate-objects-from-java-arraylist https://jb51...
http://stackoverflow.com/questions/29670116/remove-duplicates-from-a-list-of-objects-based-on-property-in-java-8
In the following code, the predicate adds the current element to aHashSet. As aHashSetdoes not allow duplicate items, theadd()method returnsfalsefor them. All such duplicate items are removed from theList, and finally, theListcontains only the unique items. List<Integer>items=newArrayList<>(...
(Java) LeetCode 83. Remove Duplicates from Sorted List —— 删除排序链表中的重复元素 Given a sorted linked list, delete all duplicates such that each element appear onlyonce. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 很简单的链...
另外还有一个code更简洁的版本出自Programcreek,贴出来给大家参考。http://www.programcreek.com/2014/06/leetcode-remove-duplicates-from-sorted-list-ii-java/ 1publicstaticListNode deleteDuplicates(ListNode head){2ListNode t =newListNode(0);3t.next =head;4ListNode p =t;56while(p.next!=null&& p.next...
4. Remove Duplicates From a List Using Java 8 Lambdas Finally, let’s look at a new solution, using Lambdas in Java 8. We’lluse thedistinct()method from the Stream API,which returns a stream consisting of distinct elements based on the result returned by theequals()method. ...
Java 8 examples to count the duplicates in a stream and remove the duplicates from the stream. We will use a List to provide Stream of items.
问如何在Java中删除字符串中的相邻重复项ENpublicStringremoveAdjacentDuplicates(String s){StringBuilder ...
* Given a sorted linked list, delete all duplicates such that each element appear only once. * For example, * Given 1->1->2, return 1->2. * Given 1->1->2->3->3, return 1->2->3. */ public class RemoveDuplicatesfromSortedList { ...
Write a Java program to remove duplicates from a given stack. Sample Solution: Java Code: importjava.util.Scanner;importjava.util.HashSet;publicclassStack{privateint[]arr;privateinttop;// Constructor to initialize the stackpublicStack(intsize){arr=newint[size];top=-1;}// Method to push an...