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Programming Articles
Page 1157 of 2547
Different possible marks for n questions and negative marking in C++ Program
In this tutorial, we are going to write a program that finds different possible marks for the given n questions with positive and negative marking.Let's say we have 10 questions and each carries 2 marks for correct answers and -1 marks for a negative answer. Our aim is to find all the possible ways in which a student can score in the exam.Let's see the steps to solve the problem.Initialize the number of questions, positive marks for the correct answer and negative marks for the wrong answer.Initialize a set to store the possible marks.Write two inner loops from 0 to ...
Read MoreSearch an element in the given singly Linked List using C++
Given a singly linked list, the task is to search a particular element in the linked list. If the element is found, then print “present” otherwise “Not present”. For example, Input-1 −1→ 2→ 3→ 4→ 5→ 6Searching for ‘7’Output −Not PresentExplanation − In the given singly linked list the element ‘7’ is not present, hence we will return the output as “Not Present”.Input-2 −1→ 2→ 3→ 4→ 5Searching for ‘2’Output −PresentExplanation − Since in the given Singly linked list the element ‘2’ is present thus we will return the output as “Present”.Approach to solve this problemThere are two approaches to ...
Read MoreHow to define the breaks for a histogram using ggplot2 in R?
To manually define the breaks for a histogram using ggplot2, we can use breaks argument in the geom_histogram function. While creating the number of breaks we must be careful about the starting point and the difference between values for breaks. This will define the number of bars for histogram so it should be taken seriously and should be according to the distribution of the data.Consider the below data frame −Examplex
Read MoreHow to create group names for consecutively duplicate values in an R data frame column?
The grouping of values can be done in many ways and one such way is if we have duplicate values or unique values then the group can be set based on that. If all the values are unique then there is no sense for grouping but if we have varying values then the grouping can be done. For this purpose, we can use rleid function as shown in the below examples.Example1Consider the below data frame −> x df1 df1Output x 1 2 2 1 3 2 4 2 5 1 6 0 ...
Read MoreDifferent substrings in a string that start and end with given strings in C++ Program
In this tutorial, we are going to write a program that finds the total number of substrings that starts and ends with the given strings.We are given one string and two substrings. We need to find the different substrings count that starts and ends with the given two substrings. Let's see an example.Inputstr = "getmesomecoffee" start = "m" end = "e"Output6There are a total of 6 different substrings in the given string. They are me, mesome, mesomemecoffe, mesomemecoffee, mecoffe, mecoffee.Let's see the steps to solve the problem.Initialize the strings.Iterate over the str and find the start and end substrings indexes. ...
Read MoreHow to use pnorm function on data frame columns in R?
The pnorm function is used to find the probability for a normally distributed random variable. Probabilities such as less than mean, greater than mean, or probability between left- and right-hand side of the mean. If we want to use pnorm function on data frame columns then apply function can help us.Consider the below data frame −Examplex1
Read MoreDigital Root (repeated digital sum) of the given large integer in C++ Program
In this tutorial, we are going to learn how to find the digital root of a given number.The digital root is the sum of a number of digits (until the sum of the digits becomes a single digit).We are given an integer in string format. And we have to find the sum of the digits repeatedly until the sum becomes a single digit.Let's see the steps to solve the problem.Initialize an integer in the string format.Iterate through the number and add each digit to the sum variable.If the sum is 0, then print 0.Else if the sum is divisible by ...
Read MoreSort an arrays of 0's, 1's and 2's using C++
Given an array of 0, 1, and 2, sort the elements in an order such that all the zeros come first before 1 and all the 2’s in the end. We have to sort all the elements of the array in-place.We can solve this problem using DNF (Dutch National Flag) Sorting Algorithm. For example, Input-1 −arr[ ]= {2, 0, 0, 1, 2, 1 }Output −0 0 1 1 2 2Explanation − Sorting the given array of elements containing 0, 1 and 2 using DNF Sorting Algorithm, it will print the output as {0, 0, 1, 1, 2, 2}.Input-2 −arr[ ]= ...
Read MoreDigits of element wise sum of two arrays into a new array in C++ Program
In this tutorial, we are going to write a program that finds the sun of two array elements and store them into a separate array.We have given two arrays and we need to add the corresponding index elements from the two arrays. If the sum is not single digits, then extract the digits from the number and store them in the new array.Let's see an example.Inputarr_one = {1, 2, 32, 4, 5} arr_two = {1, 52, 3}Output2 5 4 3 5 4 5Let's see the steps to solve the problem.Initialize two arrays with dummy data.We are using the vector to ...
Read MoreSort an arrays of 0's, 1's and 2's using Java
Given an array of 0, 1 and 2 sort the element in an order such that all the zeros come first before 1 and all the 2’s in the end. We have to sort all the elements of the array in-place.We can solve this problem using DNF (Dutch National Flag) Sorting Algorithm. For example, Input-1 −arr[ ]= {2, 0, 0, 1, 2, 1 }Output −0 0 1 1 2 2Explanation − Sorting the given array of elements containing 0, 1 and 2 using the DNF Sorting Algorithm, it will print the output as {0, 0, 1, 1, 2, 2}.Input-2 −arr[ ...
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