Subarray range with given sum
Given an unsorted array of integers arr[], and a target tar, determine the number of subarrays whose elements sum up to the […]
2530. Maximal Score After Applying K Operations
You are given a 0-indexed integer array nums and an integer k. You have a starting score of 0. In one operation: choose an index i such that 0 <= i <
Count Linked List Nodes
Given a singly linked list. The task is to find the length of the linked list, where length is defined
632. Smallest Range Covering Elements from K Lists
You have k lists of sorted integers in non-decreasing order. Find the smallest range that includes at least one number from each of the k lists. We define
Delete Alternate Nodes
Given a Singly Linked List, Delete all alternate nodes of the list ie delete all the nodes present in even positions. Examples
2406. Divide Intervals Into Minimum Number of Groups
You are given a 2D integer array intervals where intervals[i] = [lefti, righti] represents the inclusive interval [lefti, righti]. You have to divide the intervals into one
Two Smallests in Every Subarray
Given an array of integers arr, the task is to find and return the maximum sum of the smallest and second smallest element among all possible subarrays
1942. The Number of the Smallest Unoccupied Chair
There is a party where n friends numbered from 0 to n – 1 are attending. There is an infinite number of chairs in this party that are
Reorganize The Array
Given an array of elements arr[] with indices ranging from 0 to arr.size() – 1, your task is to write a program that rearranges the elements
962. Maximum Width Ramp
A ramp in an integer array nums is a pair (i, j) for which i < j and nums[i] <= nums[j]. The width of such a ramp is j – i. Given
Max distance between same elements
Given an array arr[] with repeated elements, the task is to find the maximum distance between two occurrences of an element. Note: You
921. Minimum Add to Make Parentheses Valid
A parentheses string is valid if and only if: It is the empty string, It can be written as AB (A concatenated with B),