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Articles on Trending Technologies
Technical articles with clear explanations and examples
Maximum sum subarray having sum less than or equal to given sums in C++
In this problem, we are given an array and a sum. Our task is to create a program that will find the maximum sum subarray having a sum less than or equal to given sums in c++.We have to find the subarray of any length less than or equal to n whose sum is less than or equal to the given sum.Let’s take an example to understand the problem, Input − array = {3, 5, 1, 8, 2, 9}, sum = 25Output − 25Explanation − The subarrays with sum less than or equal to 25 are {5, 1, 8, 2, ...
Read MoreConvert a given Binary Tree to Doubly Linked List (Set 1) in C++
In this tutorial, we will be discussing a program to convert a binary tree to a doubly linked list.For this we will be provided with a binary tree. Our task is to convert it into a doubly linked list such that the left and right pointers become the previous and next pointers. Also the sequential order of the doubly linked list must be equal to the inorder traversal of the binary tree.For this we are having a very straight forward approach. We will be traversing the binary tree in in order way making the nodes of the doubly linked list ...
Read MorePrint All Leaf Nodes of a Binary Tree from left to right using Iterative Approach in C++
In this problem, we are given a binary tree and we have to print all leaf nodes of the binary tree from left to right the iterative approach.Let’s take an example to understand the problemInput −Output − 1 4 7To solve this problem using the iterative approach, we will use a Depth-first search(DFS). To Traverse tree, we will start from root node and check if it is a leaf node if it is then print the node else find its child trees and traverse the child subtrees to find all leaf nodes.ExampleThe below code will implement our solution −#include ...
Read MoreMaximum sum subarray removing at most one element in C++
In this problem, we are given an array. Our task is to create a program that will find maximum sum subarray removing at most one element in c++.Basically, we need to find one element which when removed provides the maximum sum for the elements remaining in the array.Let’s take an example to understand the problem, Input − array = {5, 1, 9, 2, -1, 7}Output − 24Explanation − we have removed -1 from the array and the sum became the maximum of all possible outcomes.One solution to this problem will be finding the minimum element of the array and then ...
Read MorePrint all k-sum paths in a binary tree in C++
In this problem, we are given a binary tree and a number K and we have to print all paths in the tree which have the sum of nodes in the path equal k.Here, the path of the tree can start from any node of the tree and end at any node. The path should always direct from the root node to the leaf node. The values of the nodes of the tree can be positive, negative, or zero.Let’s take an example to understand the problem −K = 5Output −1 3 1 3 2 1 4To solve this problem, we ...
Read MorePrint a number strictly less than a given number such that all its digits are distinct in C++
In this problem, we are given a number n. Our task is to print the largest number less than n such that all its digits are distinct.Let’s take an example to understand the problemInput: n = 2332 Output: 2319To solve this problem, we reverse the count of the numbers i.e. from n to 0. And check for number with distinct digits, if the current count values satisfy the condition print it and end the loop. Otherwise continue to loop. The max number of times the loop will run is always less than n.ExampleProgram to implement our solutions, #include using ...
Read MorePermutations II in C++
Suppose we have a collection of distinct integers; we have to find all possible permutations. Now if the array stores the duplicate elements, then ignore that state which is looking similar. So if the array is like [1, 1, 3], then the result will be [[1, 1, 3], [1, 3, 1], [3, 1, 1]]To solve this, we will follow these steps −We will use the recursive approach, this will make the list, index. Index is initially 0if index = size of the list then insert list into res array, and returnfor i in range index to length of given list ...
Read MoreConvert a given Binary Tree to Doubly Linked List (Set 2) in C++
In this tutorial, we will be discussing a program to convert a binary tree to a doubly linked list.For this we will be provided with a binary tree. Our task is to convert it into a doubly linked list such that the left and right pointers become the previous and next pointers. Also the sequential order of the doubly linked list must be equal to the inorder traversal of the binary tree.For this we are having a different approach. We will be traversing the binary tree in reverse inorder way. Along with we will be creating new nodes and moving ...
Read MorePrint all Jumping Numbers smaller than or equal to a given value in C++
In this problem, we are given a number n and we have to print all jumping numbers that are smaller than or equal to n.Jumping Numbers are the number whose adjacent digits differ by one only. Some jumping numbers are 4565, 98, 7. All single-digit numbers are considered as jumping numbers. 235 is not a jumping number.Now, let’ take an example to understand the problemInput: N = 32 Output: 0 1 2 3 4 5 6 7 8 9 10 12 21 23 32To solve this problem, we will assume a graph where 0 is the starting node and traverse ...
Read MorePrint a number containing K digits with digital root D in C++
In this problem, we are given two numbers K and D. Our task is to print a number of k digits and which has digital root equal to D.Digital Root is a single-digit value which is the result of the recursive addition of the digits of the number till the one a single-digit number is reached. Also known as a digital sum.Let’s take an example to understand the problem, Input: D = 5 , K = 6 Output: 60000To solve this problem, we will be using trials of zero’s after the number D. Our number will be {D000..(k-1 times)}. This ...
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