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Chandan Agrawal on Instagram: "Comment “Array” to get 10 interview questions based on Array vs HashMap in your DM. Do NOT use HashMap everywhere. ❌ First, understand the requirement clearly. • Is the value range known? • Is it bounded? • Do you need guaranteed performance? If yes → Array is often the better choice. Predictable. Faster. Cache-friendly. HashMap gives average O(1), but its worst case is O(n). Good engineers write working code. Great engineers write the right code. #google #map #cod
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Chandan Agrawal on Instagram: "Comment “Array” to get 10 interview questions based on Array vs HashMap in your DM. Do NOT use HashMap everywhere. ❌ First, understand the requirement clearly. • Is the value range known? • Is it bounded? • Do you need guaranteed performance? If yes → Array is often the better choice. Predictable. Faster. Cache-friendly. HashMap gives average O(1), but its worst case is O(n). Good engineers write working code. Great engineers write the right code. #google #map #cod
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