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Programming Articles
Page 1470 of 2547
Chrono in C++
In this section we will see what is the Chrono library in C++. This Chrono library is used for date and time. Timers and clocks are different in different systems. So if we want to improve time over precision we can use this library.In this library, it provides precision-neutral concept, by separating the durations and point of time.The duration objects are used to express time span by means of a count like minute, two hours or ten minutes. For example, 30 seconds is represented by a duration consisting of 30 ticks of unit of 1 seconds.Example#include #include using ...
Read MoreFinal cell position in the matrix in C++
Suppose we have a set of commands as a string, the string will have four different letters for four directions. U for up, D for down, L for left and R for right. We also have initial cell position (x, y). Find the final cell position of the object in the matrix after following the given commands. We will assume that the final cell position is present in the matrix. Suppose the command string is like “DDLRULL”, initial position is (3, 4). The final position is (1, 5).The approach is simple, count the number of up, down, left and right ...
Read MoreFind a distinct pair (x, y) in given range such that x divides y in C++
Here we will see one interesting problem, we will find a pair (x, y), where x and y are in range so l
Read MoreFind a Fixed Point (Value equal to index) in a given array in C++
Here we will see how to find fixed point in a given array. In array one element will be denoted as fixed point if the value is same as its index. This program will return the value if any, otherwise return -1. The array can hold negative numbers also. And the data elements are sorted.Here we will use binary search approach to solve this problem in O(log n) time. At first we will check whether the middle element is fixed point or not, if yes, then return it, if not, then there will be two situations, if the index of ...
Read MoreFind a Fixed Point in an array with duplicates allowed in C++
Here we will see how to find fixed point in a given array. In array one element will be denoted as fixed point if the value is same as its index. This program will return the value if any, otherwise return -1. The array can hold negative numbers also. And the data elements are sorted. Here duplicate elements are allowed in the array.Here we will use binary search approach to solve this problem in O(log n) time. But we need some modification, if the normal binary search is used, then it may fail for duplicate elements. To check left, we ...
Read MoreCheck if a number is a power of another number in C++
Here we will see, whether a number is power of another number or not. Suppose a number 125, and another number 5 is given. So it will return true when it finds that 125 is power of 5. In this case it is true. 125 = 53.AlgorithmisRepresentPower(x, y): Begin if x = 1, then if y = 1, return true, otherwise false pow := 1 while pow < y, do pow := pow * x done if pow = y, then return true return false ...
Read MoreHow to copy a specific section of an array in Java?
Using copyOf() methodThe copyOf() method of the Arrays class (java.util package) accepts two parameters −an array (of any type).an integer value representing length.And copies the contents of the given array from starting position to given length and returns the new array.Exampleimport java.util.Arrays; public class CopyingSectionOfArray { public static void main(String[] args) { String str[] = new String[10]; //Populating the array str[0] = "Java"; str[1] = "WebGL"; str[2] = "OpenCV"; str[3] = "OpenNLP"; str[4] = "JOGL"; ...
Read MoreProgram for Fahrenheit to Kelvin conversion in C++
Given with temperature ‘n’ in Fahrenheit and the challenge is to convert the given temperature to kelvin and display it.ExampleInput 1-: 549.96 Output -: Temperature in fahrenheit 549.96 to kelvin : 561.256 Input 2-: 23.45 Output -: Temperature in fahrenheit 23.45 to kelvin : 268.4For converting the temperature from Fahrenheit to Kelvin, there is a formula which is given belowK = 273.5 + ((F - 32.0) * (5.0/9.0))Where, K is temperature in kelvin and F is temperature in FahrenheitApproach used below is as follows −Input temperature in a float variable let’s say FahrenheitApply the formula to convert the temperature into ...
Read MoreCheck if a large number can be divided into two or more segments of equal sum in C++
Here we will see a program, that can check whether a number can be divided into more than one segments with equal sum. Suppose a number is like 74325, then this can be segmented into three parts (7), (4, 3), (2, 5), all are of same um value.We have to follow these steps to solve this problem.Take the number as stringuse an array to hold prefix sum of the arrayNow traversing from second element to last element, and the first segment will be 0 to i-1, whose sum will be placed at prefix_sum[i - 1]Use another variable which traverses from ...
Read MoreProgram for octal to decimal conversion in C++
Given with an octal number as an input, the task is to convert the given octal number into a decimal number.Decimal numbers in computer is represented with base 10 and octal number is represented with base 8 starting from the digit 0 till 7 whereas decimal numbers can be any numeric digit starting from 0 – 9.To convert an octal number into a decimal number follow these steps −We will extract digits starting from right to left through a remainder and then multiply it with the power starting from 0 and will be increased by 1 till the (number of ...
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