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- /*
- Есть строка, состоящая из разных скобок, проверить закрыты ли все (стэк)
- */
- const strFalse = '())({}}{()][][';
- const strTrue = '(({}[]([{}])))';
- function skobki(str) {
- let stack = [];
- let opening = {
- '[': ']',
- '{': '}',
- '(': ')'
- }
- for (let i = 0; i < str.length; i++) {
- let c = str[i];
- if (i === 0 && !opening[c]) return false;
- if (opening[c]) {
- stack.push(opening[c]);
- } else {
- let el = stack.pop();
- if (!el || c !== el) return false;
- }
- }
- return true;
- }
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