가장 큰수

문제링크

startsWith join

function solution(numbers) {
    const answer = numbers.map(number => number.toString()).sort((a,b) => (b+a) - (a+b)).join('');
    
    return answer.startsWith('0') ? '0' : answer;
}

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startsWith

const str = 'Hello, world!';
console.log(str.startsWith('Hello')); // true
console.log(str.startsWith('hello')); // false


const str = 'Hello, world!';
console.log(str.startsWith('world', 7)); // true
console.log(str.startsWith('world', 8)); // false

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