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run the process without stop after exit terminal

1. install GNU screen: apt-get update apt-get upgrade apt-get install screen

2. type "screen". this will open up a new screen - kind of similar in look & feel to what "clear" would result in.

3. run the process (e.g.: ./init-dev.sh to fire up a ChicagoBoss erlang server)

4. type: Ctrl + A, and then Ctrl + D. This will detach your screen session but leave your processes running!

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Create two instances for MySQL—a client and a server instance.

To set your Cloud Platform project in this session use “gcloud config set project [PROJECT_ID]”

gcloud config set project mysql-remote-access-267116

Create the client and server VM instances.

client:

gcloud compute instances create my-client --zone us-central1-f --image-project ubuntu-os-cloud --image-family ubuntu-1804-lts --scopes https://www.googleapis.com/auth/cloud-platform

Server:

gcloud compute instances create my-server --zone us-central1-f --image-project ubuntu-os-cloud --image-family ubuntu-1804-lts --scopes https://www.googleapis.com/auth/cloud-platform

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Upgrade the Repositories

sudo apt update sudo apt upgrade

Install MySQL 5.7

sudo apt install mysql-server

Secure MySQL Installation

sudo apt install mysql-server #To do the high security provide all answers to yes

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//CareerCup 1.2 Reverse a string by StringBuilder. 
class StringReverse {

	public static void main(String args[]) {
		System.out.println("before:  " + args[0]);
		
		String s = new StringBuilder(args[0]).reverse().toString();
		System.out.println("after:  " + s);
	}
}

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//test if a string is consist of a sequence of all unique characters
public class UniqueChar {

	public static boolean isUnique(String x) {
		
		if (x.length() > 256)
			return false;
		boolean[] b = new boolean[256];
		
		for(int i=0; i<x.length(); i++) {