[Jeehay28] Week 08 Solutions #1493
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clara-shin
reviewed
May 22, 2025
| // Shrink the sliding window by moving the left pointer to the right. | ||
| // As we move left, decrease the frequency count of the character being excluded from the window. | ||
| const ch = s[left]; | ||
| freqMap.set(ch, freqMap.get(ch)! - 1); |
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Map에서 값을 가져올 때 항상 존재한다고 가정하는 ! 보다, 옵셔널 체이닝 + nullish coalescing 사용이 안전할 것 같아요 :)
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아, 그렇군요. 알려주셔서 감사합니다.
clara-shin
reviewed
May 22, 2025
| let scale: number = 1; | ||
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| while (stack.length > 0) { | ||
| output += stack.pop()! * scale; |
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! 사용보다는 stack.pop() || 0이나, 길이 체크 후 사용이 더 안전할 것 같아요 :)
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네, 설명 감사합니다! 타입스크립트가 정적 타입 체크 기반이라는 걸 잘 몰랐을 때는, 런타임에선 항상 안전하다고 생각해서 !만 써서 넘겼던 것 같아요. 이제는 좀 더 안전하게 처리해보겠습니다. 😊
| 3. If you need the result as a 32-bit unsigned integer (like for LeetCode problems dealing with uint32): | ||
| - Use >>> 0 at the end of your result | ||
| - This forces the result to be treated as an unsigned 32-bit integer | ||
| */ |
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자바스크립트의 비트 연산 특성과 32비트 정수 변환 과정을 자세히 설명한 점이 좋았어요! 👍
clara-shin
approved these changes
May 23, 2025
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