medium10 pts · first answer countshash-mapprefix-sums
Count subarrays that sum to k
Using a map of prefix sum counts that starts as {0: 1}, how many subarrays of [1, 1, 1] sum to 2?
Discussion 0
Join free to post in the discussion.
Related questions
- Range sum from a prefix arrayBackend Developer
- Compute a range sumBackend Developer
- Fast rectangle sums on a gridBackend Developer
- Many range increments at onceBackend Developer
- Running wallet balanceBackend Developer
- Cost of prefix sum queriesBackend Developer
- Average cost of a hash map lookupBackend Developer
- Worst case for a hash map lookupBackend Developer