Common interview questions

.txt

1. given a string calculate the number of repeated words and return a value.


var fruits = "orange banana orange mango"
function sting(str){
  var  n = str.match(/orange/g);
console.log(n.length)
  
}
sting(fruits)


2. copy the file  and dump a string to file.

function haproxy(username, password) {
     User.findOne({
        username:username
    }).exec().then(user => {
       const str = `user ${ username } insecure-password ${ password }\n`;
    fs.renameSync('message.txt', 'message.txt.bak');
    fs.appendFile('message.txt', str, function (err) {
        if (err) throw err;
        console.log('Saved!');
    });
    }).catch(error => {
        next(errorBuilder.badRequest(error));
    });
}