HashSet

66 posts

Introduction to Hashing - Data Structure and Algorithm Tutorials

Last Updated: 17 May 2024

Hashing refers to the process of generating a fixed-size output from an input of variable size using the mathematical formulas known as ha...read more

Algorithms

Hash

Data Structures

HashTable

Count all prime numbers that can be formed using digits of a given number

Last Updated: 11 October 2021

Given a string S consisting of N digits, the task is to find the number of distinct Prime Numbers that can be formed using the digits of the ...read more

interview-preparation

Largest number having both positive and negative values present in the array

Last Updated: 14 April 2023

Given an array arr[] consisting of N integers, the task is to find the largest number K ( 0) such that both the values K and -K are present ...read more

Arrays

Interview Experiences

two-pointer-algorithm

DSA

Experiences

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Java Examples

230+ articles

Find all distinct quadruplets in an array that sum up to a given value

Last Updated: 06 February 2023

Given an array arr[] consisting of N integers and an integer K, the task is to print all possible unique quadruplets (arr[i], arr[j], arr[k] ...read more

Count distinct emails present in a given array

Last Updated: 14 February 2023

Given an array arr[] consisting of N strings where each string represents an email address consisting of English alphabets, '.', '+' and '@' ...read more

Technical Scripter 2020

DSA

Count the number of unique characters in a string in Python

Last Updated: 23 March 2023

Given a string S consisting of lowercase English alphabets, the task is to find the number of unique characters present in the string.Exampl ...read more

Maximum sum of K-length subarray consisting of same number of distinct elements as the given array

Last Updated: 29 December 2022

Given an array arr[] consisting of N integers and an integer K, the task is to find a subarray of size K with maximum sum and count of disti ...read more

Difference between std::set and std::list

Last Updated: 02 November 2023

Set: Set is a type of associative container which stores elements in a sorted manner. All the elements of a set are unique and can not be mo ...read more

Maximum MEX from all subarrays of length K

Last Updated: 31 October 2023

Given an array arr[] consisting of N distinct integers and an integer K, the task is to find the maximum MEX from all subarrays of length K. ...read more

MEX (Minimal Excluded)

Largest Sum Contiguous Subarray having unique elements

Last Updated: 27 January 2023

Given an array arr[] of N positive integers, the task is to find the subarray having maximum sum among all subarrays having unique elements ...read more

two-pointer-algorithm

subarray-sum

DSA

Maximize length of the String by concatenating characters from an Array of Strings

Last Updated: 22 March 2023

Find the largest possible string of distinct characters formed using a combination of given strings. Any given string has to be chosen compl ...read more

Absolute distinct count in a Linked List

Last Updated: 16 January 2023

Given a Linked List consisting of integers, the task is to print the number of distinct absolute values present in the Linked List.Examples: ...read more

Check if each element of an Array is the Sum of any two elements of another Array

Last Updated: 06 June 2021

Given two arrays A[] and B[] consisting of N integers, the task is to check if each element of array B[] can be formed by adding any two ele ...read more

Number of Positions to partition the string such that atleast m characters with same frequency are present in each substring

Last Updated: 20 May 2024

Given a string str of lowercase English alphabets and an integer m. The task is to count how many positions are there in the string such tha ...read more

Strings

Thoughtworks

Hash

Competitive Programming

Sum of elements whose square root is present in the array

Last Updated: 12 September 2022

Given an array arr[], the task is to find the sum of all those elements from the given array whose square root is present in the same array. ...read more

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