Renato Castillo on Muck Rack

Renato Castillo

Verified
Houston
As seen in: KXLN-TV (Houston, TX), Medium
Experienced Bilingual Multi-media Journalist - Periodista con extensa experiencia en diferentes plataformas. Twittes are my own and don't represent any company.
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Articles

Mastering the Two Sum Problem in C++ - From O(n²) to O(n)

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By Renato Castillo Verified
| Medium
Practicing algorithmic thinking in C++ — solved Two Sum in both O(n²) and O(n), explained complement logic, hash tables, and return patterns. Clear code, clean complexity. • Solve it first in O(n²) (the brute force way) • Improve it to O(n) using (hash table) • Show how the final answer is “previous index + current index” We are given: We must return indices of two numbers in whose sum equals . There is exactly one solution and we cannot use the same element twice.
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