Detecting Route state changes can be done by subscribing to the router and listening to the events being emitted. In the example below you will see all the router events that you can listen to in Angular.
Month: January 2018
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Angular Material with Angular 5
Install the latest version of Angular Material + Animations using npm to get started.
npm i --save @angular/material @angular/cdk npm i --save @angular/animations
call
The call() is a predefined Javascript function which can used to call a method of an object while passing it another object. For example, if you look at the following code, you will observe that the object being passed into the call() method replaces the this variable of the object whose method is being invoked.
To perform unit testing on a component that makes use of a service, that returns a promise, we can use fakeAsync() and spy() methods from Angular’s unit testing package.
In Javascript, when you pass a primitive data type like String or Int in Java to a function or a method, and a function modifies it, then this does not effect the actual data being passed. For example,
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Floyd Warshall Algorithm
The Floyd Warshall Algorithm is used to find the shortest distance between all pairs in a weighted graph with positive or negative edges. It makes use of Dynamic Programming.
- If A, B, C are vertices, then this algorithm checks for the following
if (AC > AB + BC)
AC = AB + BC;
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Kth largest element in an Array
Kth largest element in an array can be determined using the “Quickselect Algorithm”.
Average performance O(n)
Worst-case performance O(n^2)
Amazon
Usually for SDE I, the interview involves
- 1 Phone screen with coding.
Onsite - 3 Onsite whiteboard coding interviews (includes bar raiser)
- 1 System Design round
- 1 Behavioral round
For entry level software engineers, usually it comprises of
- 1 Hangouts coding session
Onsite - 5 whiteboard onsite coding interviews
Microsoft
For different levels of Software Engineering positions, usually the interview comprises of
- 1 Skype coding session
Onsite - 5 whiteboard onsite coding interviews
Most tech companies try to test your ability to apply core Computer Science fundamentals to solve problems.
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What is Dynamic Programming?
Dynamic Programming is a way of solving a problem by breaking it down into smaller sub problems and storing them without having to recalculate them. Usually this involves 3 main methods.
You will need a Windows PC for this. Make sure you have backed up your data before proceeding.
- Download the Samsung Android drivers for Windows from here and install it.
- Download ODIN from here and extract it.
- T mobile S7 for flashing your T-Mobile S7 Edge device from here and extract it.
- Hold the Volume Down + Power + Home button of your device simultaneously until you see options to Flash your device.
- Now choose to move forward with flashing your device by pressing the Volume up key on your device.
- Now connect your device using a USB cable to your Windows PC.
- Run ODIN as an admin and choose the files starting with BL, AP, CP & CSC correspondingly into their respective fields and click on Start.
- Wait for the flash operation to terminate successfully. This usually takes around 5-10 minutes depending on your hardware.