Package g0401_0500.s0442_find_all_duplicates_in_an_array

Class Solution

java.lang.Object

g0401_0500.s0442_find_all_duplicates_in_an_array.Solution

public class Solution
extends Object

442 - Find All Duplicates in an Array\. Medium Given an integer array `nums` of length `n` where all the integers of `nums` are in the range `[1, n]` and each integer appears **once** or **twice** , return _an array of all the integers that appears **twice**_. You must write an algorithm that runs in `O(n) `time and uses only constant extra space. **Example 1:** **Input:** nums = [4,3,2,7,8,2,3,1] **Output:** [2,3] **Example 2:** **Input:** nums = [1,1,2] **Output:** [1] **Example 3:** **Input:** nums = [1] **Output:** [] **Constraints:** * `n == nums.length` * 1 <= n <= 105 * `1 <= nums[i] <= n` * Each element in `nums` appears **once** or **twice**.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
List<Integer>	findDuplicates(int[] nums)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

findDuplicates

public List<Integer> findDuplicates(int[] nums)