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Articles on Trending Technologies
Technical articles with clear explanations and examples
Product of all nodes in a Binary Tree in C++
Given with a binary tree containing nodes and the task is to find the product of all the nodes of a given binary tree.In a binary tree, there is a root node which is the master node of all the nodes in a tree. A node contains data part, left pointer which will further create left subdirectory and a right pointer which will help in creating right subdirectory. So to traverse the tree, we can take a temporary pointer that will associate with left pointer to traverse left subdirectory or right pointer to traverse the right sub directory.Input Output Nodes are-: 10, ...
Read MoreProduct of all prime nodes in a Singly Linked List in C++
Given with n nodes and the task is to print the product of all the prime nodes in a linked list. Prime nodes are the ones that will have prime values as their count locations.Input 10 20 30 40 50Output 4, 00, 000Explanation − 10 is at index value 1 which is non-prime so it will be skipped. Moving to 20 with index value 2 which is a prime number so it will be considered. Similarly, 40 and 50 are at prime index locations.Product − 20*40*50 = 4, 00, 000In the above diagram, red coloured nodes represents the prime nodesApproach used below ...
Read MoreProgram to Iterate over a Stream with Indices in Java 8
To iterate over a Stream with Indices in Java 8, the code is as follows −Exampleimport java.util.stream.IntStream; import java.util.*; import java.util.concurrent.atomic.AtomicInteger; public class Demo{ public static void main(String[] args){ String[] my_array = { "T", "h", "i", "s", "s", "a", "m", "p", "l", "e" }; AtomicInteger my_index = new AtomicInteger(); System.out.println("The elements in the string array are :"); Arrays.stream(my_array).map(str -> my_index.getAndIncrement() + " -> " + str).forEach(System.out::println); } }OutputThe elements in the string array are : 0 -> T 1 -> h 2 -> i 3 -> ...
Read MoreProgram for average of an array(Iterative and Recursive) in C++
Given an array of N integers arr[N], the task is to find the average of arr[N]. To achieve the result we can either use iterative approach or the recursive approach. We will be showing both in the given solution.Average of an array will be sum of all the elements of an array divided by the number of elements.Iterative methodIn iterative approach, we use loops like for-loop, while-loop or do-while loop which executes the statements till the condition holds true which means 1.Let’s take an example and then discuss how it can be obtained using iterative approach.Input arr[] = {1, 2, 4, ...
Read MoreJava program to find Maximum and minimum element's position in a list
To find the maximum and minimum element’s position in a list, the Java program is as follows −Exampleimport java.util.*; import java.util.Arrays; import java.util.Collections; public class Demo{ public static int index_val(int my_arr[], int t){ if (my_arr == null){ return -1; } int len = my_arr.length; int i = 0; while (i < len){ if (my_arr[i] == t){ return i; } else { ...
Read MoreProgram to check bitnoicity of an array in C++
Given an array arr[N] of N integers, the task is to check whether the given array is bitonic or not. If the given array is bitonic then print “Yes its a bitonic array”, else print “No its not a bitonic array”.A Bitonic array is when the array is in strictly increasing order first and then in strictly decreasing order.Like this array arr[] = {1, 2, 3, 4, 2, -1, -5} is a bitonic array, because till 4 it is in strictly increasing order and after 4 it is in strictly decreasing order.Input arr[] = {1, 3, 5, 4, 2, 0}Output Yes its ...
Read MoreProgram to check whether a number is Proth number or not in C++
Given with a number ‘n’ and the task is to determine whether the given positive integer is a proth or not and display the result as an output.What is Proth Number?A proth number is given by$$N=k\cdot\:2^{n}+1$$Where, n is a positive integer and k is a odd positive integerThe first few proth numbers are given below −3, 5, 9, 13, 17, 25, 33, 41, 49, 57, 65, 81, 97.......Inputnumber: 17Outputits a proth numberInputnumber: 18Outputits not a proth numberApproach used in the given program is as followsInput the number to check for the conditionApply the given formula to check whether its a ...
Read MoreFind the uncommon values concatenated from both the strings in Java
To find the uncommon values concatenated from both the strings in Java, the code is as follows −Exampleimport java.util.*; import java.lang.*; import java.io.*; public class Demo{ public static String concat_str(String str_1, String str_2){ String result = ""; int i; HashMap my_map = new HashMap(); for (i = 0; i < str_2.length(); i++) my_map.put(str_2.charAt(i), 1); for (i = 0; i < str_1.length(); i++) if (!my_map.containsKey(str_1.charAt(i))) result += str_1.charAt(i); else my_map.put(str_1.charAt(i), ...
Read MoreProgram to check if water tank overflows when n solid balls are dipped in the water tank in C++
Given with the radius and height of cylindrical water tank, ‘n’ number of spherical solid balls with the radius and the volume of water in the tank and the task is to check whether the tank will overflow or not when balls are dipped in the tank.Formula to calculate the volumeCylinder 3.14 * r * r * hWhere, r is radius of tank and h is the height of the tankSphere (4/3) * 3.14 * R * R * RWhere, R is radius of sphere ballInput tank_height = 5 tank_radius = 2 water_volume = 10 capacity = 10 ball_radius = 2Output It will overflowApproach ...
Read MoreFind the first repeated word in a string in Java
To find the first repeated word in a string in Java, the code is as follows −Exampleimport java.util.*; public class Demo{ static char repeat_first(char my_str[]){ HashSet my_hash = new HashSet(); for (int i=0; i
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