Java 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{ res...
leetcode442. Find All Duplicates in an Array 题目要求 Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twice in this array. Could you do it without extra space and in O(n) runt...
原题链接在这里:https://leetcode.com/problems/find-all-duplicates-in-an-array/ 题目: Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twice in this array. Could you do it without ...
2,3,4,2,5,6,3};HashSet<Integer>set=newHashSet<>();HashSet<Integer>duplicates=newHashSet<>();for(inti:array){if(!set.add(i)){duplicates.add(i);}}System.out.println("Duplicate elements in the array are: "+duplicates);}}
通过题主的描述可以看到，其实就是一个List<Integer>的集合数据处理问题，希望把相同的数据放到一起，是一种归类操作，也就是说其实总得需要把List<Integer>形式转化为Map<Integer, List<Integer>>的形式 这种形式map的key也就是当前的这个数字，而这个value就是这个数字对应的所有当前出现此key的集合 Li...
how to remove duplicates in an array thanx. Ilja Preuss author Posts: 14112 posted 22 years ago Create a Set out of the array. The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content...
Write a Java program to get the majority element from an array of integers containing duplicates. Majority element: A majority element is an element that appears more than n/2 times where n is the array size.Pictorial Presentation:Sample Solution:...
Use a Separate Index to Remove Duplicates From an Array in Java Here, theifstatement is used to check if the element is equal to its next element. If not then, that particular element is added at some index in that similar array only. This is done to show that in the array, this pa...
26. Remove Duplicates from Sorted Array Determine whether an integer is a palindrome. Do this without extra space.(不要使用额外的空间) Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra ...
This post will discuss how to remove duplicates from an array in Java... In Java 8 and above, the recommended solution is to use Stream API to create a new array without duplicates.