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DSA Patterns โ Tips & Tricks | While solving DSA problems efficiently, recognizing patterns is ๐ฐ๐ฟ๐๐ฐ๐ถ๐ฎ๐น. Hereโs a quick cheat sheet to help you ace your coding interviews!
๐ป ๐๐ณ ๐๐ต๐ฒ ๐ถ๐ป๐ฝ๐๐ ๐ฎ๐ฟ๐ฟ๐ฎ๐ ๐ถ๐ ๐๐ผ๐ฟ๐๐ฒ๐ฑ:
โก๏ธ Use ๐๐ถ๐ป๐ฎ๐ฟ๐ ๐ฆ๐ฒ๐ฎ๐ฟ๐ฐ๐ต or ๐ง๐๐ผ ๐ฃ๐ผ๐ถ๐ป๐๐ฒ๐ฟ๐ to save time!
๐งฉ ๐๐ณ ๐ฎ๐๐ธ๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐ฎ๐น๐น ๐ฝ๐ฒ๐ฟ๐บ๐๐๐ฎ๐๐ถ๐ผ๐ป๐/๐๐๐ฏ๐๐ฒ๐๐:
โก๏ธ Think Backtracking to explore all possibilities.
๐ณ ๐๐ณ ๐ด๐ถ๐๐ฒ๐ป ๐ฎ ๐ง๐ฟ๐ฒ๐ฒ:
โก๏ธ Apply ๐๐๐ฆ or ๐๐๐ฆ to traverse effectively.
๐ธ๏ธ ๐๐ณ ๐ด๐ถ๐๐ฒ๐ป ๐ฎ ๐๐ฟ๐ฎ๐ฝ๐ต:
โก๏ธ Choose between ๐๐๐ฆ and ๐๐๐ฆ for navigation.
๐ ๐๐ณ ๐ด๐ถ๐๐ฒ๐ป ๐ฎ ๐๐ถ๐ป๐ธ๐ฒ๐ฑ ๐๐ถ๐๐:
โก๏ธ ๐ง๐๐ผ ๐ฃ๐ผ๐ถ๐ป๐๐ฒ๐ฟ๐ will help you solve it efficiently.
๐ฆ ๐๐ณ ๐ฟ๐ฒ๐ฐ๐๐ฟ๐๐ถ๐ผ๐ป ๐ถ๐ ๐ฏ๐ฎ๐ป๐ป๐ฒ๐ฑ:
โก๏ธ Use a ๐ฆ๐๐ฎ๐ฐ๐ธ to mimic recursive behavior.
๐ ๐๐ณ ๐บ๐๐๐ ๐๐ผ๐น๐๐ฒ ๐ถ๐ป-๐ฝ๐น๐ฎ๐ฐ๐ฒ:
โก๏ธ ๐ฆ๐๐ฎ๐ฝ ๐๐ฎ๐น๐๐ฒ๐ or store multiple values in the same pointer.
๐ ๐๐ณ ๐ฎ๐๐ธ๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐บ๐ฎ๐
๐ถ๐บ๐๐บ/๐บ๐ถ๐ป๐ถ๐บ๐๐บ ๐๐๐ฏ๐ฎ๐ฟ๐ฟ๐ฎ๐:
โก๏ธ Think ๐๐๐ป๐ฎ๐บ๐ถ๐ฐ ๐ฃ๐ฟ๐ผ๐ด๐ฟ๐ฎ๐บ๐บ๐ถ๐ป๐ด for optimal solutions.
๐ ๐๐ณ ๐ฎ๐๐ธ๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐๐ผ๐ฝ/๐น๐ฒ๐ฎ๐๐ ๐ ๐ถ๐๐ฒ๐บ๐:
โก๏ธ Utilize a ๐๐ฒ๐ฎ๐ฝ or ๐ค๐๐ถ๐ฐ๐ธ๐ฆ๐ฒ๐น๐ฒ๐ฐ๐ to get the best result.
๐งต ๐๐ณ ๐ฎ๐๐ธ๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐ฐ๐ผ๐บ๐บ๐ผ๐ป ๐๐๐ฟ๐ถ๐ป๐ด๐:
โก๏ธ Rely on ๐ ๐ฎ๐ฝ๐ or a ๐ง๐ฟ๐ถ๐ฒ for fast lookup.
โจ ๐๐น๐๐ฒ:
โก๏ธ ๐ ๐ฎ๐ฝ/๐ฆ๐ฒ๐ for O(1) time or ๐ฆ๐ผ๐ฟ๐ for O(n log n) time.
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