Read the question, write JavaScript on the right, then Run or Check.
QuestionHint and solution stay closed until you open them
Read a string of ()[]{}. Print yes if brackets match, else no.
Input. One string.
Output. yes or no.
Examples
Input
([])
Output
yes
Input
([)]
Output
no
Hint
- Stack: push openers; pop on closers.
Show correct code
Peek only after you have tried. You can still Check your own version.
const s = readLine().trim();
const pair = { ')': '(', ']': '[', '}': '{' };
const st = [];
let ok = true;
for (const ch of s) {
if ('([{'.includes(ch)) st.push(ch);
else if (')]}'.includes(ch)) {
if (st.pop() !== pair[ch]) { ok = false; break; }
}
}
console.log(ok && st.length === 0 ? 'yes' : 'no');
main.jsconsole.log · readLine() · Ctrl + Enter
ResultIdle
Run to see output. Check grades the tests.