Unique Number II
Given an array arr[] containing 2*n + 2 positive numbers, out of which 2*n numbers exist in pairs whereas only two number occur exactly once and […]
1399. Count Largest Group
You are given an integer n. Each number from 1 to n is grouped according to the sum of its digits. Return the number of groups
Unique Number I
Given a unsorted array arr[] of positive integers having all the numbers occurring exactly twice, except for one number which will occur only once. Find the number
2338. Count the Number of Ideal Arrays
You are given two integers n and maxValue, which are used to describe an ideal array. A 0-indexed integer array arr of length n is considered ideal if the following conditions hold: Every arr[i] is
2145. Count the Hidden Sequences
You are given a 0-indexed array of n integers differences, which describes the differences between each pair of consecutive integers of a hidden sequence of length (n + 1). More formally, call
781. Rabbits in Forest
There is a forest with an unknown number of rabbits. We asked n rabbits “How many rabbits have the same color
Find Only Repetitive Element from 1 to n-1
Given an array arr[] of size n, filled with numbers from 1 to n-1 in random order. The array has only one repetitive element. Your task is to find
Minimum Weight Cycle
Given an undirected, weighted graph with V vertices numbered from 0 to V-1 and E edges, represented by a 2d array edges[][], where edges[i] = [u, v, w] represents the
2176. Count Equal and Divisible Pairs in an Array
Given a 0-indexed integer array nums of length n and an integer k, return the number of pairs (i, j) where 0 <= i < j < n, such that nums[i] == nums[j] and (i *
Bridge edge in a graph
Given an undirected graph with V vertices numbered from 0 to V-1 and E edges, represented by 2d array edges[][], where edges[i]=[u,v] represents the edge between the
3396. Minimum Number of Operations to Make Elements in Array Distinct
You are given an integer array nums. You need to ensure that the elements in the array are distinct. To achieve this,
Directed Graph Cycle
Given a Directed Graph with V vertices (Numbered from 0 to V-1) and E edges, check whether it contains any cycle or not.The graph is represented as a 2D vector edges[][],