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Tkinter is the GUI module of python. It uses various message display options which are in response to the user actions or change in state of a running program. The message box class is used to display variety of messages like confirmation message, error message, warning message etc.Example-1The below example shows display of a message with the background colour, font size and colour etc customizable.import tkinter as tk main = tk.Tk() key = "the key to success is to focus on goals and not on obstacles" message = tk.Message(main, text = key) message.config(bg='white', font=('times', 32, 'italic')) message.pack() ... Read More
Suppose we have two endpoints of diameter of a circle. These are (x1, y1) and (x2, y2), we have to find the center of the circle. So if two points are (-9, 3) and (5, -7), then the center is at location (-2, -2).We know that the mid points of two points are −$$(x_{m},y_{m})=\left(\frac{(x_{1}+x_{2})}{2},\frac{(y_{1}+y_{2})}{2}\right)$$Example Live Demo#include using namespace std; class point{ public: float x, y; point(float x, float y){ this->x = x; this->y = y; } void display(){ cout
The destroy() method in Tkinter destroys a widget. It is useful in controlling the behavior of various widgets which depend on each other. Also when a process is complete by some user action we need to destroy the GUI components to free the memory as well as clear the screen. The destroy() method achieves all this.In the below example we have screen with 3 buttons. Clicking the first button closes the window itself where as the clicking of the second button closes the 1st button and so on. This behavior is emulated by using the destroy method as shown in ... Read More
Suppose we have a positive number n, and we have to find the sum of N and its maximum prime factor. So when the number is 26, then maximum prime factor is 13, so sum will be 26 + 13 = 39.Approach is straight forward. Simply find the max prime factor, and calculate the sum and return.Example Live Demo#include #include using namespace std; int maxPrimeFact(int n){ int num = n; int maxPrime = -1; while (n % 2 == 0) { maxPrime = 2; n /= 2; } for (int i = 3; i 2) maxPrime = n; return maxPrime; } int getRes(int n) { int sum = maxPrimeFact(n) + n; return sum; } int main() { int n = 26; cout
Suppose we have two values a and b. We have to find x and y, such that ax – by = 0. So if a = 25 and b = 35, then x = 7 and y = 5.To solve this, we have to calculate the LCM of a and b. LCM of a and b will be the smallest value that can make both sides equal. The LCM can be found using GCD of numbers using this formula −LCM (a,b)=(a*b)/GCD(a,b)Example Live Demo#include #include using namespace std; void getSmallestXY(int a, int b) { int lcm = (a * b) / __gcd(a, b); cout
Suppose we have two arrays of size m and n, The task is to find minimum length subarray in the first array, that contains all the elements if the second array. Element in second array may be present in the large array in non-contiguous but order must be same. So if two arrays are like A = [2, 2, 4, 5, 8, 9], and B = [2, 5, 9], then the output will be 5. As the smallest subarray of A, will be [2, 4, 5, 8, 9]. Here all elements like [2, 5, 9] are in the same order. ... Read More
Suppose we have a series called f. Each term of f, follows this rule f[i] = f[i – 1] – f[i – 2], we have to find the Nth term of this sequence. f[0] = X and f[1] = Y. If X = 2 and Y = 3, and N = 3. The result will be -2.If we see this closely, there will be almost six terms before the sequence starts repeating itself. So we will find the first 6 terms of the series and then the Nth term will be the same as (N mod 6)th term.Example#include< iostream> using ... Read More
A stopwatch is used to measure the time interval between two events usually in seconds to minutes. It has various usage like in sports or measuring the flow of heat, current etc in an industrial setup. Python can be used to creat a stopwatch by using its tkinter library.This library will have the GUI features to create a stopwatch showing the Start, Stop and Reset option. The key component of the program is using the lable.after() module of tkinter.label.after(parent, ms, function = None) where parent: The object of the widget which is using this function. ms: Time in miliseconds. function: ... Read More
If we have two integers A and B, and B >= A, we have to compute the last digit of the B! / A! When the value of A = 2 and B = 4, then result is 2, 2! = 2 and 4! = 24, so 24/2 = 12. the last digit is 2.As we know that the last digit of factorial will be in set {0, 1, 2, 4, 6}, then follow these steps to solve this problem −We will find the difference between A and Bif diff >=5, then answer is 0otherwise, iterate from (A + 1) ... Read More
Consider we have an array A, and another two integers K and M. We have to find Kth minimum element after concatenating the array to itself M number of times. Suppose the array is like A = [3, 1, 2], K = 4 and M = 3, so after concatenating A, 3 times, it will be [3, 1, 2, 3, 1, 2, 3, 1, 2], the 4th smallest element is 2 here.To solve this problem, we will sort the array A, then return the value, present at index ((K – 1)/M), of the array.Example Live Demo#include #include using namespace std; int ... Read More