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Articles on Trending Technologies
Technical articles with clear explanations and examples
Floyd Cycle Detection Algorithm to detect the cycle in a linear Data Structure
Floyd Cycle is one of the cycle detection algorithms to detect the cycle in a given singly linked list.In the Floyd Cycle algorithm, we have two pointers that initially point at the head. In Hare and Tortoise’s story, Hare moves twice as fast as Tortoise, and whenever the hare reaches the end of the path, the tortoise reaches the middle of the path.AlgorithmInitialize Hare and Tortoise at the head node of the List.Initially, the hare moves twice as fast as the tortoise.Move the hare and tortoise both and find if the hare reaches the end of the Linked List, return ...
Read MoreWrite a program in C++ to find the top K frequent element in an array of integers
Suppose we have an array of integers of size N and a key K. Our task is to print the top K most frequent element of the array. For example, Input-1 −N = 6 K = 2 arr[ ] = {1 ,1, 1, 2, 2, 3}Output −1 2Explanation − In the given array of integers, the top K=2 elements whose frequency is most in the array are {1, 2}.Input-2 −N = 2 K = 1 arr[ ] = {1, 2}Output −1Explanation − In the given array of integers, the top K=1 elements whose frequency is most in the array are ...
Read MoreWrite a program in Java to find the missing positive number in a given array of unsorted integers
Let’s suppose we have given an array of unsorted integers. The task is to find the positive missing number which is not present in the given array in the range [0 to n]. For example, Input-1 −N = 9 arr = [0, 2, 5, 9, 1, 7, 4, 3, 6]Output −8Explanation − In the given unsorted array, ‘8’ is the only positive integer that is missing, thus the output is ‘8’.Input-2 −N = 1 arr = [0]Output −1Explanation − In the given array, ‘1’ is the only one positive integer which is missing, thus the output is ‘1’.Approach to solve ...
Read MoreFind the index of the first unique character in a given string using C++
Given a string ‘s’, the task is to find the first unique character which is not repeating in the given string of characters and return its index as output. If there are no such characters present in the given string, we will return ‘-1’ as output. For example, Input-1 −s = “tutorialspoint”Output −1Explanation − In the given string “tutorialspoint”, the first unique character which is not repeating is ‘u’ which is having the index ‘1’. Thus we will return ‘1’ as output.Input-2 −s = “aaasttarrs”Output −-1Explanation − In the given string “aaasttarrs’, there are no unique characters. So, we will ...
Read MoreDetect Capital in a given string using C++
Let's suppose we have a string ‘str’ which consists of some character in it. The task is to check whether the given string has all its characters capitalized or not and return True or False respectively. For example, Input-1 −str = “INDIA”Output −TrueExplanation − Since all the character of the input string is capital, we will return true in this case.Input-2 −str = “Programmer”Output −FalseExplanation − Since all the characters of the input string are not in the capital except the first letter, we will return false in this case.The approach used to solve this problemIn the given string, we ...
Read MoreCount Good Meals in Python
A good meal contains exactly two different food items with a sum of deliciousness equal to a power of two. You can pick any two different foods to make a good meal.Let us suppose we have given an array of integers arr where arr[i] is the deliciousness of the ith item of food, return the number of different good meals you can make from this list.For example, Input-1 −arr[ ] = {1, 3, 5, 7, 9}Output −4Explanation − The good meals are (1, 3), (1, 7), (3, 5) and, (7, 9). Their respective sums are 4, 8, 8, and 16, ...
Read MoreWrite a program in JavaScript to check if two strings are anagrams of each other or not
Given two strings ‘a’ and string ‘b’, we have to check if they are anagrams of each other or not and return True/False. For example, Input-1 −String a= “india” String b= “nidia”Output −TrueExplanation − Since the given string ‘b’ contains all the characters in the string ‘a’ thus we will return True.Input-2 −String a= “hackathon” String b= “achcthoon”Output −FalseExplanation − Since the given string ‘b’ doesn’t have all the characters as string ‘a’ have thus we will return False.The approach used to solve this problemIn the given strings ‘a’ and ‘b’, we will check if they are of the same ...
Read MoreC++ Program to Delete the First Node in a given Singly Linked List
A linked list is a linear data structure that has multiple nodes that are connected with each other. Each node consists of two fields – Data Field and the address of the next node.Let us assume we have a singly linked list and we need to delete the first node from this linked list. For example, Input 1 − 4 → 3 → 2 → 1Output − 3 → 2 → 1 →Explanation − ‘4’ is the first node in the given singly linked list. After deleting the first node, the linked list will be 3→2→1.Input 2 − 1 → ...
Read MoreWhat is the difference between Java and Java EE
JSE (Java Standard Edition)By using JavaSE you can develop stand-alone application ex: adobe reader, anti-virus, media players, etc. Java SE is also known as core java.lang: Language basics.util: Collection framework, events, data structure and other utility classes such as date.io: File operations, and other input and output operations.math: Multi precision arithmetics.nio: Non-blocking I/O framework for Java.net: Classes an API’s related to networking.security: This package provides classes and interfaces such as key generation, encryption, and decryption which belongs to the security framework.sql: Classes and interfaces for accessing/manipulating the data stored in databases and data sources.awt: Classes and interfaces to create GUI ...
Read MoreWrite a program in Python to replace all the 0’s with 5 in a given number
Given an Integer N the task is to replace all the 0’s that appear in the number with ‘5’. However, the number with leading ‘0’ cannot be replaced with ‘5’ as it remains unchanged. For example, Input-1 −N = 1007Output −1557Explanation − The given number has 2 zeros which when replaced by ‘5’ results in the output as 1557.Input-2 −N = 00105Output −155Explanation − Since the given number starts with the leading ‘0’ which can be ignored and the output after replacing the 0 in the middle with ‘5’ results the output as 155.Approach to solve this problemTo replace all ...
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