Tutorial by Examples: f

Memory is efficiently organized in a circular queue as compared to linear queue. In Linear Queue: In Circular Queue: Remaining spaces can be used: Code for it to do the same: #include<stdio.h> #define MAX 10000 int front = -1; int rear = -1; int a[MAX]; bool isFull() { if...

For example if the input is: Output should be false: As 4 in the left sub-tree is greater than the root value(3) If the input is: Output should be true

Linked list representation is more efficient in terms of memory managerment. Code to show enqueue and deque in a Queue using Linklist in O(1) time. #include<stdio.h> #include<malloc.h> struct node{ int data; node* next; }; node* front = NULL; node* rear = NULL; vo...

Setup ActiveMQ Download a ActiveMQ distribution from activemq.apache.org and unpack it somewhere You can start the server immediately, running unsecured on localhost, using the script bin/activemq When it is running, you can access your local server's console on http://localhost:8161/admin/ Co...

Android Apps are written in Java. The Android SDK tools compile the code, data and resource files into an APK (Android package). Generally, one APK file contains all the content of the app. Each app runs on its own virtual machine(VM) so that app can run isolated from other apps. Android system wor...

First of all you should know that you can extend Android.Application class so you can access two important methods related with app lifecycle: OnCreate - Called when the application is starting, before any other application objects have been created (like MainActivity). OnTerminate - This...

Activity lifecycle is quite more complex. As you know Activity is single page in the Android app where user can perform interaction with it. On the diagram below you can see how Android Activity lifecycle looks like: As you can see there is specific flow of Activity lifecycle. In the mobile appl...

As you know you can have one activity but different fragments embedded in it. That is why fragment lifecycle is also important for developers. On the diagram below you can see how Android fragment lifecycle looks like: As described in the official Android documentation you should implement at le...

If you would like to get base project with methods described below you can download Xamarin.Android application template from my GitHub. You can find examples for: Application lifecycle methods Activity lifecycle methods Fragment lifecycle methods https://github.com/Daniel-Krzyczkowski/Xamar...

Consider the Binary Tree: Pre-order traversal(root) is traversing the node then left sub-tree of the node and then the right sub-tree of the node. So the pre-order traversal of above tree will be: 1 2 4 5 3 6 7 In-order traversal(root) is traversing the left sub-tree of the node then the node ...

Visual Basic for Applications (VBA) is the macro language behind all Microsoft Office products and is essentially identical across all Office products. What differs from product to product is the Object model. Excel has workbooks, worksheets and cells. Access has tables and attributes. Outlook h...

CIDER function cider-eval-last-sexp can be used to execute the the code while editing the code inside the buffer. This function is by default binded to C-x C-e or C-x C-e. CIDER manual says C-x C-e or C-c C-e will: Evaluate the form preceding point and display the result in the echo area and/or ...

Consider the tree: Lowest common ancestor of nodes with value 1 and 4 is 2 Lowest common ancestor of nodes with value 1 and 5 is 3 Lowest common ancestor of nodes with value 2 and 4 is 4 Lowest common ancestor of nodes with value 1 and 2 is 2

For example if the inputs are: Example:1 a) b) Output should be true. Example:2 If the inputs are: a) b) Output should be false. Pseudo code for the same: boolean sameTree(node root1, node root2){ if(root1 == NULL && root2 == NULL) return true; if(root1 == NULL ...

One of the ways to think about the commands that should be executed, to edit a text in a certain manner, is as entire sentences. A command is an action performed on an object. Therefore it has a verb: :normal i " insert :normal a " append :normal c " overwrite :normal y ...

The idea is to measure a layout before and after each change and if there is a significant change you can be somewhat certain that its the softkeyboard. // A variable to hold the last content layout hight private int mLastContentHeight = 0; private ViewTreeObserver.OnGlobalLayoutListener keyboa...

//MySingletonClass.h @interface MYSingletonClass : NSObject + (instancetype)sharedInstance; -(instancetype)init NS_UNAVAILABLE; -(instancetype)new NS_UNAVAILABLE; @end //MySingletonClass.m @implementation MySingletonClass + (instancetype)sharedInstance { static MySingleto...

/* This is a simple query which can generate a sequence of numbers. The following example generates a sequence of numbers from 1..100 */ select level from dual connect by level <= 100; /*The above query is useful in various scenarios like generating a sequence of dates from a given date. The ...

This method allows non-implementation-specific code to be written and deployed across multiple jms platforms. Below basic example connects to activemq jms server and sends a message. import java.util.Properties; import javax.jms.JMSException; import javax.jms.Queue; import javax.jms.QueueConne...