Account activity dataset, variant 46. Count index pairs `(i, j)` with `i < j` whose values sum to the target. Implement `solve(nums, target)` and return the requested value.
DrawCode Practice Problem
Count Target-Sum Pairs · Account activity 46
Interactive Visualizer Workspace
Explore step-by-step interactive animations, memory state tracking, and live multi-language execution in DrawCode.
Launch Interactive Visualizer