mediumNeetCode 150
Two Sum II - Input Array Is Sorted
Return 1-indexed positions of two numbers summing to target in a sorted array
Two Sum II - Input Array Is Sorted rewards a clean two-pointer invariant instead of checking every combination. Interviewers love it because it reveals your invariant-driven scanning and your edge-case discipline. Keep the invariant in your head and the pointer moves become obvious.

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1Two Sum IImedium
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