‹ gallerydsa-round1
easy–medium · 15 questions · ~225 min

DS&A · Round 1 foundations (array + hash-map)

Start here. The Round-1 core: two questions, ~30 min each on HackerRank — Q1 a straightforward array, Q2 a medium hash-map. Agoda scores understanding, efficiency, performance, testing, communication — so write tests and narrate out loud.

0 / 15 passed
  1. 20Contains Duplicate15m
  2. 01Two Sum15m
  3. 22Best Time to Buy and Sell Stock15m
  4. 23Maximum Subarray15m
  5. 24Move Zeroes15m
  6. 26Missing Number15m
  7. 27Merge Sorted Array15m
  8. 28Sort Colors15m
  9. 25Valid Palindrome15m
  10. 21Valid Anagram15m
  11. 11Group Anagrams15m
  12. 07Top K Frequent Elements15m
  13. 31Top Users by Spending (bookings)15m
  14. 29Subarray Sum Equals K15m
  15. 30Longest Consecutive Sequence15m