1. O(N^2): 常规解题思路,先排序。再遍历,如果两个相邻元素相等,则会有重复元素。存入list。 publicList<Integer> findDuplicates(int[] nums) { List<Integer> list =newArrayList<>(); Arrays.sort(nums);for(inti=1;i<nums.length;i++) {if(nums[i]==n
leetcode算法: Find All Duplicates in an Array 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) runtime? Exa...
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) runtime? Example: Input: [4,3,2,7,8,2,3,1] Output:...
442. Find All Duplicates in an ArrayMedium Topics Companies Given an integer array nums of length n where all the integers of nums are in the range [1, n] and each integer appears at most twice, return an array of all the integers that appears twice. You must write an algorithm that ...
详见:https://leetcode.com/problems/find-all-duplicates-in-an-array/description/ C++: 方法一: classSolution{public:vector<int>findDuplicates(vector<int>&nums){vector<int>res;for(inti=0;i<nums.size();++i){intidx=abs(nums[i])-1;if(nums[idx]<0){res.push_back(idx+1);}nums[idx]=-...
Sometimes you have an array of data and you want to remove all duplicates from the array. In this article, I will show you three ways in which you can do this. 1) Remove duplicates using forEach and includes The Arrayincludes()method determines whether an array includes a certain value ...
Finally, the last method to find duplicates in an array is to use the for loop.Here is an example that compares each element of the array with all other elements of the array to check if two values are the same using nested for loop:...
hi, i have created an array from recordset containing user names eg. (davidp, davidp, evenf, patricka, rebeccah) which i have sorted in alphabetical order, but i need to identify duplicates in this array and the number of times it has been duplicated.
Unclassified [#IABV2_LABEL_PURPOSES#] [#IABV2_LABEL_FEATURES#] [#IABV2_LABEL_PARTNERS#] 0 any one tell me how to remove duplicates value in an array removeduplicates 11th Nov 2016, 1:14 PM Haider Ali 0 If you don't tag or specify a programming language we can't give you a good ...
log('Array without duplicates:', removeDuplicates(arrayWithDuplicates)); // [ 'abc', 'bca', 'cba' ] Readme Keywords remove duplicates remove duplicates in an array duplicates removePackage Sidebar Install npm i remove-duplicates-items Repository github.com/Gopikrishna-Gurivisetti/remove-duplicates...