sunb0002

    public int mySqrt(int x) {
        if (x == 0 || x == 1) return x;
        int start = 0, end = x;

        while (end - start > 1) {
            int mid = start + (end - start) / 2;
            if (mid <= x / mid) { // Avoid int overflow
                start = mid;
            } else {
                end = mid;

sunb0002

## Generate a keypair
openssl req -x509 -newkey rsa:2048 -sha256 -keyout example.key -out example.crt -subj "/CN=example.com" -days 3650

## Create PFX keystore with this keypair 
openssl pkcs12 -inkey example.key -in example.crt -export -out keystore.pkcs12

## Convert PFX keystore into Java JKS keystore
keytool -importkeystore -srckeystore keys.pkcs12 -srcstoretype pkcs12 -destkeystore keystore.jks

## Other often used

sunb0002

openssl s_client -showcerts -connect www.domain.com:443

sunb0002

// "p" is price/revenue array
// return the maximum revnue by cutting a rod with length "n"

cutrod (int[] p, n) {

	if (n==0) return 0;

	max=Integer.MIN_VALUE;
	
	for (i = 1 to n) {

sunb0002

// Code detail -- https://blog.teamtreehouse.com/getting-started-speech-synthesis-api
// Demo -- https://codepen.io/matt-west/pen/wGzuJ


function sayit(text, voice) {
      var msg = new SpeechSynthesisUtterance();
      msg.text = text;
      msg.voice = voice
      speechSynthesis.speak(msg);

sunb0002

javadoc ./com/sb/MyEnum.java -cp . -d testdir -author

sunb0002

ls *finanti*.sql | grep -E -v "^(1B|1C)" | xargs -I {} echo "-f {}" | xargs
// xargs supports parallel execution.

sunb0002

let rm = angular.element(document.body).injector().get("RM");
rm.email = "my.email@hotmail.com"
angular.element(document.body).injector().get('MyDataService').getRmEmail();

sunb0002

ssh -F ssh/config -N -L 1622:db-server-host:1622 jump-host-ssh-alias

sqlplus "user/pwd@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=localhost)(Port=1622))(CONNECT_DATA=(SERVICE_NAME=THE_DB_SCHEMA)))"

sunb0002

const usage = () => console.log(`
    Usage:
    node decoder.js <file-path>
    The script will decode any base64-encoded value for each line,
    and create x.decoded.xml under the same folder.
`);

if (process.argv.length < 3) {
    usage();
    process.exit(0);