K Closest Points to Origin
Given an array points representing n points in a 2D plane, where points[i] = [x_i, y_i], and an integer k,…
Find K Closest Elements
Given a sorted integer array arr, two integers x and k, find the k closest elements to x in the…
Top K Frequent Elements
Given an integer array nums and an integer k, return the k most frequent elements in the array. If there…
Sort Characters By Frequency
Given a string s, sort the characters in the string based on their frequency in non-increasing order.
Kth Largest Element in an Array
Given an unsorted array of integers and a positive integer k, find the kth largest element in the array.
Sort Array by Increasing Frequency
Given an array nums of integers, you need to sort the array in increasing order based on the frequency of…
Least Number of Unique Integers after K Removals
Given an array arr of integers and an integer k, you need to find the least number of unique integers…