Google Kickstart Boilerplate - NodeJS

function readInput() {
    const readline = require('readline')
    const rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout,
    })
  
    let problem = {
      T: 0,
      testCases: []
    }

    rl.on('line', function (line) {
      // TODO: Process input
      if (problem.T === 0) {
        // Get number of test cases from first line
        problem.T = Number(line)
      } else {
      //the code below is used to read multiple lines consisting or strings and number, please change according to input
        let previousLine = "";
        if (!previousLine) {
            // no previous line to compare to, so just remember this line
            previousLine = line;
        } else {
            if(!parseInt(line)){
                [a,b] = previousLine.split(" ");
                problem.testCases.push([Number(a), Number(b),line])
            }
            previousLine = line;
           
        }
      }
    }).on('close', () => {
      // Finished processing input, now solve question
      solveProblem(problem.testCases)
      process.exit()
    })
  }

  const solve = (array) => {
    return array;
  }
  
  const solveProblem = (cases) => {
    for (let index = 0; index < cases.length; index++) {
      const result = solve(cases[index])
      console.log(`Case #${index + 1}: ${result}`)
    }
  }
  
  readInput()