Because the array is sorted, you can use two pointers. Start one at the beginning (smallest) and one at the end (largest). If the sum is too small, move the left pointer right to increase it. If the sum is too large, move the right pointer left to decrease it. This eliminates pairs without checking them one by one.
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$ curl repovive.com/roadmaps/maang-interview-prep/two-pointers-sliding-window/two-sum-ii-hint
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