Available question text
Design a data structure that supports adding integers and checking whether any two previously added numbers sum to a given target, handling duplicates correctly and balancing the trade-off between efficient add and efficient find operations.
Related questions
Continue with questions that share topics or the same question type.
- All O`one Data Structure
Coding · Design · Doubly-Linked List · Hash Table
- Classic data structure and algorithm coding problems .
Coding
- Combination Sum III
Coding
- Convert Integer to the Sum of Two No-Zero Integers
Coding
Sources · 1 reference
These records explain where the question appears. A company tag or candidate report does not guarantee a future interview question.
Hello Interview · 1 record
No company association
Leetcode 170. Two Sum III - Data structure design
Reported date not specified · 0 source reports
Source snapshot: Nov 12, 2026
View source