Count Target Sum Index Pairs | Dataford Interview Questions

As always, what is the time complexity for the algorithm exercise?

Implement count_target_pairs(nums, target) to count distinct index pairs (i, j) where i < j and nums[i] + nums[j] == target. Return the count as an integer and analyze the time and space complexity.

Function signature: count_target_pairs(nums, target)

Constraints

0 <= nums.length <= 10^4
-10^9 <= nums[i] <= 10^9
-2 * 10^9 <= target <= 2 * 10^9
Count pairs by indices, so duplicate values at different indices may create multiple pairs.

Function Signature

def count_target_pairs(nums, target):

Your question is Count Target Sum Index Pairs. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

As always, what is the time complexity for the algorithm exercise?

Function signature: count_target_pairs(nums, target)

Constraints

0 <= nums.length <= 10^4
-10^9 <= nums[i] <= 10^9
-2 * 10^9 <= target <= 2 * 10^9
Count pairs by indices, so duplicate values at different indices may create multiple pairs.

Function Signature

def count_target_pairs(nums, target):

Your question is Count Target Sum Index Pairs. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.