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Server Side Programming Articles
Page 2039 of 2109
Print Immutable Linked List in Reverse in C++
Suppose we have an immutable linked list, we have to print out all values of each node in reverse with the help of the following interface −ImmutableListNode − This is an interface of an immutable linked list, we are given the head of the list.We have to use the following functions to access the linked list −ImmutableListNode.printValue() − This will print value of the current node.ImmutableListNode.getNext() −This will return the next node.So if the list is like: [0, -4, -1, 3, -5], then the output will be [-5, 3, -1, -4, 0]To solve this, we will follow these steps −Define ...
Read MoreAirplane Seat Assignment Probability in C++
Suppose n passengers board an airplane with exactly n seats. If the first passenger has lost the ticket and picks a seat randomly. But after that, the rest of passengers will follow these operations −Take their own seat written in the ticket if it is still available, Pick other seats randomly when they find their seat occupiedSo we have to find what is the probability that the n-th person can get his own seat? So if the input is 2, then the output will be 0.5. So the second person has a probability of 0.5 to get the second seat ...
Read MoreGet Equal Substrings Within Budget in C++
Suppose we have given two strings s and t of the same length. We want to change s to t. Changing the i-th character of s to i-th character of t will assign cost as |s[i] - t[i]| that is, the absolute difference between the ASCII values of the characters. We have also given an integer maxCost. We have to find the maximum length of a substring of s that can be changed to be the same as the corresponding substring of t with a cost less than or equal to maxCost.So if the input is like s = “abcd” ...
Read MoreRemove K Digits in C++
Suppose we have a non-negative integer num that is represented as a string, we have to remove k digits from the number so that the new number is the smallest possible. So if the input is like “1432219” and k = 3, then the result will be “1219”.To solve this, we will follow these steps −Define a stack st, create an empty string retn := size of numfor i in range 0 to n – 1while k is non zero and stack is not empty and top of stack > num[i]delete from the stack and decrease k by 1insert num[i] ...
Read MoreDraw a line in C++ graphics
In this tutorial, we will be discussing a program to draw a line in C++ graphics.To implement different shapes and sizes, animations, graphics.h library is used in C++.Example#include int main(){ int gd = DETECT, gm; initgraph(&gd, &gm, ""); line(150, 150, 450, 150); line(150, 200, 450, 200); line(150, 250, 450, 250); getch(); closegraph(); return 0; }Output
Read MoreDelete and free() in C++ Program
In this tutorial, we will be discussing a program to understand delete() and free() functions in C++.Both of these functions are primarily used for the same purpose i.e freeing up unused memory. The delete() operator is for the ones allocated using new() and free() for the ones allocated using malloc().Example#include #include int main(){ int x; int *ptr1 = &x; int *ptr2 = (int *)malloc(sizeof(int)); int *ptr3 = new int; int *ptr4 = NULL; //incorrect usage of delete delete ptr1; delete ptr2; //correct usage of delete delete ptr3; delete ptr4; getchar(); return 0; }
Read MoreData types ranges and their macros in C++
Given the task is to find the memory range of the different data types, that what range of value a data type can store the value from minimum value to maximum value. There is memory range of data type from in which value of data can be stored. It is difficult to remember the large range of value so C++ has macros for represent these numbers, from macros these large numbers can be directly assigned to variable without typing the whole Number range. Example 'char'(signed) is character data type and has a range of -128 to +128 and ...
Read MoreTrivial classes in C++
In this tutorial, we will be discussing a program to understand trivial classes in C++.When a class/ struct contains explicitly defaulted value inside it, then it is known as Trivial classes. Further trivial classes have their own constructor, assignment operator and destructor.Example//using the default constructor struct Trivial { int i; private: int j; }; //defining your own constructor //and then marking it as default struct Trivial2 { int i; Trivial2(int a, int b){ i = a; } Trivial2() = default; };Output(No output as we are just defining classes here and not creating object instances from them.)
Read MoreHow to add/subtract large numbers using Python?
You can add/subtract large numbers in python directly without worrying about speed. Python supports a "bignum" integer type which can work with arbitrarily large numbers. In Python 2.5+, this type is called long and is separate from the int type, but the interpreter will automatically use whichever is more appropriate.As long as you have version 2.5 or better, just perform standard math operations and any number which exceeds the boundaries of 32-bit math will be automatically (and transparently) converted to a bignum.examplea = 182841384165841685416854134135 b = 135481653441354138548413384135 print(a - b)OutputThis will give the output −47359730724487546868440750000
Read MoreHow to find Kaprekar numbers within a given range using Python?
A modified Kaprekar number is a positive whole number n with d digits, such that when we split its square into two pieces - a right hand piece r with d digits and a left hand piece l that contains the remaining d or d−1 digits, the sum of the pieces is equal to the original number (i.e. l + r = n).You can find Kaprekar numbers within a given range by testing each number for the given condition in the given range. exampledef print_Kaprekar_nums(start, end): for i in range(start, end + 1): ...
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