Search compatible choices with a safe bound
Choose a compatible word subset, model character use explicitly, and improve search without pruning a valid optimum.
What you will practice
- Check internal repetition and cross-word conflicts separately.
- Explain the meaning of each search state.
- Prove a pruning condition before relying on it.
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Sources and scope
The cited employer material supports the preparation format and skills, not these exact tasks, APIs, tests, or timings. Existing nrml exercises retain their own provenance. Reading times and rehearsal budgets are nrml suggestions. Completion records practice and review, not hiring readiness.
- Meta hiring FAQ · practical-format context, not attribution of this exerciseReviewed 2026-10-28