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.next!=null){7if(p.next.val ==p.next.next.val){8intd...
(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...
获取有重复值的ArrayList。 从这个ArrayList创建一个新的List。 使用Stream().distinct()方法,返回不同的对象流。 将此对象流转换为List下面是上述方法的实现。// Java program to remove duplicates from ArrayList import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util....
1. UsingCollection.removeIf()to Remove Duplicates from OriginalList TheremoveIf()method removes all of the elements of this collection that satisfy a specifiedPredicate. Each matching element is removed usingIterator.remove(). If the collection’s iterator does not support removal, then anUnsupportedOp...
2. Remove Duplicates From a List Using Plain Java We can easily remove the duplicate elements from a List with the standard Java Collections Frameworkthrough a Set: public void givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect() { ...
*/ public class RemoveDuplicatesfromSortedList { public ListNode deleteDuplicates(ListNode head) { if(head==null){ return head; } ListNode result = new ListNode(-1); result.next = head; while(head.next!=null){ if(head.next.val==head.val){ ...
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.net/article/243751.htm ...
StreamSetListStreamSetListConvert List to SetRemove DuplicatesCreate Stream from ListFilter Duplicates 这个序列图简洁地表达了从列表到集合,并去除重复元素的过程。 饼状图 去重操作对于集合数据的处理效率有着显著影响。以下是一个饼状图,表示在数据处理过程中,去重操作所占的时间与不开销的时间比例: ...
一、去除List中重复的String public List<String> removeStringListDupli(List<String> stringList) { Set<String> set = new LinkedHashSet<>(); set.addAll(stringList); stringList.clear(); stringList.addAll(set); return stringList; } 1. ...
Sample 1. Method to remove duplicates from a Map ( string and List of objects ) by matching the member field of the object. Map<String,List<ClassInfoBean>> removeDuplicates(Map<String, List<ClassInfoBean>> interfaceMap){ Map<String, List<ClassInfoBean>> interfaceMapWithoutDuplicate ...