medium10 pts · first answer countshash-mapcounting
Counting pairs with equal values
How many index pairs i < j have nums[i] === nums[j] in [1, 2, 3, 1, 1, 3]?
Discussion 0
Join free to post in the discussion.
Related questions
- Paths across a 3 × 7 gridBackend Developer
- Average cost of a hash map lookupBackend Developer
- Worst case for a hash map lookupBackend Developer
- Removing duplicates with a SetBackend Developer
- Number keys in a plain objectBackend Developer
- Iteration order of a MapBackend Developer
- When to choose Map over a plain objectBackend Developer
- Set of look-alike objectsBackend Developer