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Add stack-queue module: ten stack and queue interview problems, monotonic stack, min stack, queue from stacks and stack from a queue, brute-force cross-checks, dry-run traces, operation counts, pitfalls (11 tests)

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b6nxynun5JFivebVb1
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Claude
2026-11-12 22:35:43 +05:30
parent c5c435ae20
commit b9aeb78b24
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stack-queue/output/03-min-stack-trace.txt
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Min stack: both internal stacks after every operation
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push 5 values=[5] mins=[5] (new or equal minimum, also pushed on mins)
push 3 values=[3, 5] mins=[3, 5] (new or equal minimum, also pushed on mins)
push 7 values=[7, 3, 5] mins=[3, 5]
push 3 values=[3, 7, 3, 5] mins=[3, 3, 5] (new or equal minimum, also pushed on mins)
getMin values=[3, 7, 3, 5] mins=[3, 3, 5] getMin() = 3
pop -> 3 values=[7, 3, 5] mins=[3, 5] (it was the minimum, mins popped too)
getMin values=[7, 3, 5] mins=[3, 5] getMin() = 3
pop -> 7 values=[3, 5] mins=[3, 5]
getMin values=[3, 5] mins=[3, 5] getMin() = 3
pop -> 3 values=[5] mins=[5] (it was the minimum, mins popped too)
getMin values=[5] mins=[5] getMin() = 5
getMin results: [3, 3, 3, 5] (identical for MinStack and EncodedMinStack)