Teradata | SDE | DSA Round
February 6, 2026 · 9 reads
Summary
I recently experienced a problem-solving round for the SDE role at Teradata, which focused on data structures, algorithms, and SQL.
Full Experience
Round 1 : Problem Solving
Problem 1: Count Prime Gap Balanced Subarrays
Problem Link: https://leetcode.com/problems/count-prime-gap-balanced-subarrays/description
Problem 2 : Insert Delete GetRandom O(1) - No Duplicates
Problem Link: https://leetcode.com/problems/insert-delete-getrandom-o1/description/
Problem 3: SQL LEFT JOIN
Difficulty: 🟡 Medium
Interview Questions (3)
1.
Count Prime Gap Balanced Subarrays
Data Structures & Algorithms
2.
Insert Delete GetRandom O(1) - No Duplicates
Data Structures & Algorithms
Problem 2 : Insert Delete GetRandom O(1) - No Duplicates
3.
SQL LEFT JOIN
Other·Medium
Problem 3: SQL LEFT JOIN