Map

48 posts

Last Updated: 26 March 2024

You are given a playlist of a radio station since its establishment. The playlist has a total of N songs. What is the longest sequence of su ...read more

Competitive Programming

Picked

DSA

Map

CSES Problems

CSES Solutions - Concert Tickets

Last Updated: 21 March 2024

There are N concert tickets available, each with a certain price given as array tickets[]. Then, M customers arrive, one after another. Each ...read more

Sorting

Competitive Programming

Minimum cost to make all elements with same frequency equal

Last Updated: 04 December 2023

Given an array arr[] of integers, the task is to find the minimum cost for making all the integers that have the same frequency equal. By pe ...read more

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Check if encrypted information remains confidential during its Validity Period

Last Updated: 09 November 2023

Given an array key of size n, instruction count representing the number of keys a hijacker can test per second, during a total validity peri ...read more

Count the unique type of nodes present in Binary tree

Last Updated: 30 November 2023

According to the property of a Binary tree, a node can have at most two children so there are three cases where a node can have two children ...read more

Count of Subsequences with distinct elements

Last Updated: 29 October 2023

Given an array arr[] (1=a[i]=1e9) containing N (1=N=1e5) elements, the task is to find the total number of subsequences such that all elemen ...read more

Printing pairs in an Array

Last Updated: 20 September 2023

Given a pile of n pairs of elements in array arr[], containing 2*n elements, we have to print with the following conditions follow:If pair e ...read more

Find the sum of all values lesser than the element of the Array

Last Updated: 09 October 2023

Given an array arr[] of n integers. For each index i, you have to find the sum of all integers present in the array with a value less than a ...read more

Sorting

DSA

Map

Find the maximum number of intersections lines

Last Updated: 06 December 2023

Given an N horizontal line segments are arranged on the X-axis of a 2D plane. The start and end point of each line segment is given in an Nx ...read more

DSA

Map

Checking valid shuffle of two Strings

Last Updated: 31 May 2024

Given two strings str1 and str2, and a third-string shuffle, determine if shuffle is a valid shuffle of str1 and str2, where a valid shuffle ...read more

Designing a HashMap without Built-in Libraries

Last Updated: 31 October 2023

Design a HashMap without using any built-in hash table libraries. To be specific, your design should include these functions:put(key, value) ...read more

Find length of the longest subarray containing atmost two distinct integers

Last Updated: 17 May 2023

Given an array arr[] containing N elements, the task is to find the length of the longest subarray of an input array containing at most two ...read more

sliding-window

DSA

Map

Implementation on Map or Dictionary Data Structure in C

Last Updated: 27 March 2023

C programming language does not provide any direct implementation of Map or Dictionary Data structure. However, it doesn't mean we cannot im ...read more

DSA

Map

Introduction to Map – Data Structure and Algorithm Tutorials

Last Updated: 01 May 2024

Maps is also known as dictionaries or associative arrays, are fundamental data structures that allow you to efficiently store and retrieve...read more

Data Structures

DSA

Map

How to traverse through all values for a given key in multimap?

Last Updated: 06 April 2024

Given a multimap and a key of the multimap, our task is to simply display the (key - value) pairs of the given key. In multimap we can have ...read more

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