Determine If Two Numbers Sum to Target
Problem Description
Given an integer array nums and an integer target, determine if there exist any two distinct numbers within the array nums that sum up to the target integer. If such a pair exists, return true; otherwise, return false.
Constraints
- The solution should demonstrate basic algorithmic fluency.
- An O(N) time complexity solution using a hash set is acceptable.
Deliverable
Return a boolean value: true if a pair of distinct numbers summing to target is found, false otherwise.
Hint
Consider the trade-offs between a hash-set based approach (typically O(N) time complexity) and a sorting-based approach (typically O(N log N) time complexity).
AI interview prep
Core dilemma
Optimizing for time complexity (O(N)) while managing the associated space complexity, and correctly handling the 'distinct numbers' constraint, especially when duplicates are present in the input array.
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Determine If Two Numbers Sum to Target
Problem Description
Given an integer array nums and an integer target, determine if there exist any two distinct numbers within the array nums that sum up to the target integer. If such a pair exists, return true; otherwise, return false.
Constraints
- The solution should demonstrate basic algorithmic fluency.
- An O(N) time complexity solution using a hash set is acceptable.
Deliverable
Return a boolean value: true if a pair of distinct numbers summing to target is found, false otherwise.
Hint
Consider the trade-offs between a hash-set based approach (typically O(N) time complexity) and a sorting-based approach (typically O(N log N) time complexity).