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[jj7779607] Week6 #903
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[jj7779607] Week6 #903
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,26 @@ | ||
/** | ||
* @param {string} s | ||
* @return {boolean} | ||
*/ | ||
var isValid = function (s) { | ||
// 괄호 관리 스택 | ||
const stack = []; | ||
|
||
// 여는 괄호, 닫는 괄호 매핑 | ||
const brackets = { "(": ")", "{": "}", "[": "]" }; | ||
|
||
// for문 돌며 확인 | ||
for (let i of s) { | ||
// 여는 괄호일 경우 | ||
if (brackets[i]) { | ||
stack.push(brackets[i]); | ||
// 닫는 괄호일 경우 | ||
} else if (i !== stack.pop()) { | ||
return false; | ||
} | ||
} | ||
return true; | ||
}; | ||
|
||
// 시간복잡도: O(n) | ||
// 공간복잡도: O(n) |
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js에서는 스택이 비었을 때,
stack.pop()
사용의 리턴 결과가 어떻게 되나요??There was a problem hiding this comment.
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undefined를 반환하게 됩니다. 스택이 비었을 때를 고려하지 못했는데 확인 감사합니다!