Package g1401_1500.s1481_least_number_of_unique_integers_after_k_removals

Class Solution

java.lang.Object
g1401_1500.s1481_least_number_of_unique_integers_after_k_removals.Solution
public class Solution extends java.lang.Object
1481 - Least Number of Unique Integers after K Removals.

Medium

Given an array of integers arr and an integer k. Find the least number of unique integers after removing exactly k elements**.**

Example 1:

Input: arr = [5,5,4], k = 1

Output: 1

Explanation: Remove the single 4, only 5 is left.

Example 2:

Input: arr = [4,3,1,1,3,3,2], k = 3

Output: 2

Explanation: Remove 4, 2 and either one of the two 1s or three 3s. 1 and 3 will be left.

Constraints:

  • 1 <= arr.length <= 10^5
  • 1 <= arr[i] <= 10^9
  • 0 <= k <= arr.length

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    findLeastNumOfUniqueInts(int[] arr, int k)
     

    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

    • findLeastNumOfUniqueInts

      public int findLeastNumOfUniqueInts(int[] arr, int k)