// 过滤出分组大小大于1的组 List<Integer> duplicates = duplicateCount.entrySet().stream() ...
duplicates.add(car); } } return duplicates; } } Step 7.Create Junit class called CarTest which will test for duplicate Cars in a List of Cars package com.roytuts.test; import java.util.ArrayList; import java.util.List; import org.junit.After; import org.junit.Before; import org.junit....
importjava.util.ArrayList;importjava.util.List;publicclassFindDuplicates{publicstaticList<Integer>findDuplicates(List<Integer>list){List<Integer>duplicates=newArrayList<>();for(inti=0;i<list.size();i++){for(intj=i+1;j<list.size();j++){if(list.get(i).equals(list.get(j))){duplicates.add(...
在Java 8及以上版本中,我们可以使用Stream API来更加简洁地找出List中的重复元素。 importjava.util.Arrays;importjava.util.List;importjava.util.stream.Collectors;publicclassFindDuplicateElements{publicstaticvoidmain(String[]args){List<Integer>list=Arrays.asList(1,2,3,2);List<Integer>duplicates=list.stream...
"2","3","5","8","3","5","2");List<String>repeat=findRepeat(dataList);print(dataList...
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. ...
classSolution {publicList<Integer> findDuplicates(int[] nums) { List<Integer> res =newArrayList<>();if(nums ==null|| nums.length == 0)returnres;for(inti = 0; i < nums.length; i++) {intindex = Math.abs(nums[i]) - 1;if(nums[index] > 0) nums[index] *= -1;else{ ...
toList的方式进行归类的，所以上面的代码还可以再减少一个参数，写为 // 第二种方式Java8 StreamMap<Integer, List<Integer>> map1 = list.stream().collect(Collectors.groupingBy(Function.identity()));System.out.println(map1);结果为 结果也是一样的，题主可以自行选择 ...
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.
26 Remove Duplicates from Sorted Array 删除有序数组中的重复项 Java Easy 27 Remove Element 移除元素 Java Easy 31 Next Permutation 下一个排列 Java Medium 33 Search in Rotated Sorted Array 搜索旋转排序数组 Java Medium 34 Find First and Last Position of Element in Sorted Array 在排序数组中查找元...