Computer Science · Data Structures
Identify the invalid output stack permutation for the input sequence 1, 2, 3, 4, 5, assuming pop operations can occur at any time during stack pushes.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15, 4, 3, 2, 1
- 22, 3, 5, 4, 1
- 34, 3, 5, 2, 1
- 43, 4, 1, 5, 2✓
Correct answer
3, 4, 1, 5, 2
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