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Articles by Dev Prakash Sharma
Page 42 of 42
Count 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 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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