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Server Side Programming Articles
Page 7 of 2108
Find maximum XOR of given integer in a stream of integers in C++
In this problem, we are given Q queries each of which is one of the following type, Type 1 − insertion (1, i) to add the element with value i, in your data structure.Type 2 − findXOR (2, i), to find the XOR of all elements of the data structure with the element i.The data structure should contain only 1 element initially which will be 0.Let’s take an example to understand the problem, InputQueries: (1, 9), (1, 3), (1, 7), (2, 8), (1, 5), (2, 12)Output15 15ExplanationSolving each query, (1, 9) => data structure => {9} (1, 3) => data ...
Read MoreFind number of subarrays with even sum in C++
In this problem, we are given an array arr[] consisting of N elements. Our task is to find the subarray with even sum.Let’s take an example to understand the problem,Inputarr[] = {2, 1, 3, 4, 2, 5}Output28ExplanationThe subarrays are −{2}, {4}, {2}, {2, 4}, {2, 2}, {1, 3}, {1, 5}, {3, 5}, {4, 2}, {2, 1, 3}, {2, 1, 5}, {2, 3, 5}, {2, 4, 2}, {1, 3, 4}, {1, 3, 2}, {1, 4, 5}, {1, 2, 5}, {3, 4, 5}, {3, 2, 5}, {2, 1, 3, 4}, {2, 1, 3, 2}, {2, 3, 4, 5}, {2, 3, 2, 5}, {2, 4, 2, 5}, {1, 3, 4, 2}, {1, 4, 2, 5}, {3, 4, 2, 5}, {2, 1, 3, 4, 2}, {2, 1, 3, 4, 2, 5}Solution ApproachA simple solution to the problem is using the direct method which is by calculating all subarray and their sums. And the increase count for the subarray with even sum. And at last return count.Program to illustrate the working of our solution,Example#include using namespace std; int countEvenSumSubArray(int arr[], int n){ int evenSumCount = 0, sum = 0; for (int i=0; i
Read MorePHP – How to cut out part of a string using iconv_substr()?
In PHP, the iconv_substr() function is used to cut a portion of a specified string by the offset and length parameters. Suppose we have a string "helloWorld" and we want to cut and show only the string (llowo), then we will select it by using numbers from 2 to 5.Syntaxstring iconv_substr(str $string, int $offset, int $length, str $encoding)Parametersiconv_substr() accepts four parameters: $string, $offset, $length and $encoding.$string− The $string parameter specifies the original string.$offset− If the $offset parameter is non-negative, then the iconv_substr() function cuts the selected portion of the string from beginning at offset character, counting from zero. And if ...
Read MoreInfinity or Exception in C# when divide by 0?
Divide by zero is the System.DivideByZeroException, which is a class that handles errors generated from dividing a dividend with zero.Let us see an example.Exampleresult = num1 / num2;Above, if num2 is set to 0, then the DivideByZeroException is caught since we have handled exception.
Read MoreWhat is the difference between ordered factors and unordered factors in R?
To understand the difference ordered factors and unordered factors, it is better to understand them by creating the factor vectors by using ordered argument with TRUE and FALSE options. For example, if we have a vector x then it can be ordered or unordered as factor(x,ordered=TRUE) and factor(x,ordered=FALSE).Example1x1
Read MoreC# Program to convert Digits to Words
Firstly, declare the words from 0 to 9 −// words for every digits from 0 to 9 string[] digits_words = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };The following are the digits to be converted to words −// number to be converted into words val = 4677; Console.WriteLine("Number: " + val);Use the loop to check for every digit in the given number and convert into words −do { next = val % 10; a[num_digits] = next; num_digits++; val = val / 10; } while(val > 0);ExampleYou can try to ...
Read MoreC# Program to Convert Decimal to Binary\\n
Let’ s say you have set the decimal to be −decVal = 34; Console.WriteLine("Decimal: {0}", decVal);Use the ToString() method for the values you get as a binary number for the decimal value −while (decVal >= 1) { val = decVal / 2; a += (decVal % 2).ToString(); decVal = val; }Now set a new empty variable to display the binary number using a loop −string binValue = "";ExampleYou can try to run the following code to convert decimal to binary in C#.using System; using System.Collections.Generic; using System.Text; namespace Demo { class MyApplication { ...
Read MoreWhat is the difference between a class and an object in C#?
When you define a class, you define a blueprint for a data type.Objects are instances of a class. The methods and variables that constitute a class are called members of the class.To access the class members, you use the dot (.) operator after the object name. The dot operator links the name of an object with the name of a member for example, Box Box1 = new Box();Above you can see Box1 is our object. We will use it to access the members −Box1.height = 7.0;You can also use it to call member functions −Box1.getVolume();The following is an example showing ...
Read MoreDelete a file in C#
Use File.Delete method to delete a file.Firstly, set the path of the file you want to delete.String myPath = @"C:\New\amit.txt";Now, use the File.Delete method to delete the file.File.Delete(myPath);The following is the complete code −Exampleusing System; using System.IO; public class Program { public static void Main() { String myPath = @"C:\New\amit.txt"; Console.WriteLine("Deleting File"); File.Delete(myPath); } }OutputDeleting File
Read MoreRepresent Int64 as a Hexadecimal String in C#
To represent Int64 as a Binary string in C#, use the ToString() method and set the base as the ToString() method’s second parameter i.e.16 for Hexadecimal.Int64 represents a 64-bit signed integer.Firstly, set an Int64 variable.long val = 947645;Now, convert it to a hex string by including 16 as the second parameter.Convert.ToString(val, 16)Exampleusing System; class Demo { static void Main() { long val = 947645; Console.WriteLine("Long: "+val); Console.Write("Hex String: "+Convert.ToString(val, 16)); } }OutputLong: 947645 Hex String: e75bd
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