Don't LeetCode Yet - 0 - Usage of LIOJ

Course link
Things to know before LeetCode!

LIOJ Interface

Lidemy OJ: An online judge system based on the open-source OJ project from Qing-Dao University

File I/O using nodejs library readline

var readline = require('readline');

var lines = []
var rl = readline.createInterface({
      input: process.stdin
});

// push one line to the array lines
rl.on('line', function (line) {
      lines.push(line)
});

// After all the input, call the solve() function
rl.on('close', function() {
      solve(lines)
})
//-------------------------above using readline to get input---------
//-------------------------put solution below------------------------
function solve(lines){
    // solution here
}

Test the solution on local machine
Need NodeJS installed to run the code above.
Recommended practice: write an input file separately (input.txt) and cat out the content then pass (pipe) it to the program (code.js):
cat input.txt | node code.js
Test the solution online
I found jsbin quite useful for testing. It’s really easy to use and we can see the result right away.

Project 0

Problem 1001

Just copy past the code!
Use .split() to SPLIT a line into an array.

Problem 1002

SPOILER ALERT! Not Very Smart Solution below!

function solve(lines) {
    for (var i=0; i<line s.length;i++){
        var tmp = lines[i].split(' ')

        if  (Number(tmp[0])==Number(tmp[1]) && Number(tmp[1]) === 0){
            return
        } else if (Number(tmp[0])> Number(tmp[1])){ 
            console.log(Number(tmp[0]))
        } else {
            console.log(Number(tmp[1]))
        }
    }
}

It could be better to use variable to store Number(tmp[0]) and Number(tmp[1]). So the code will looks cleaner.
Use === to compare with number 0.

Practice with problem 1003, 1004 and 1010

Just to get familiar with the OJ system.

In problem 1004 Use BigInt() to process BIG numbers.