Monk Takes a Walk

index.js

// Sample code to perform I/O:

process.stdin.resume();
process.stdin.setEncoding("utf-8");
var stdin_input = "";

process.stdin.on("data", function (input) {
    stdin_input += input;                               // Reading input from STDIN
});

process.stdin.on("end", function () {
   main(stdin_input);
});

// Warning: Printing unwanted or ill-formatted data to output will cause the test cases to fail

// Write your code here
function main(input) {
    const lines = input.split('\n'); // ['nBBZLaosnm', 'JHkIsnZtTL']
    const numOfTests = lines.shift(); // 2
    const vowels = ['A', 'E', 'I', 'O', 'U', 'a', 'e', 'i', 'o', 'u'];

    lines.forEach((trees) => {
        const treesWithVowels = trees.split('').filter((tree) => {
            return vowels.includes(tree);
        }); // [ 'a', 'o']

        console.log(treesWithVowels.length);
    });
}