Reclassify 7 challenges by difficulty#212
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kunal-mansukhani merged 1 commit intomainfrom Mar 7, 2026
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Move challenges to correct difficulty based on computational pattern: - Easy→Medium: 43_count_array_element, 44_count_2d_array_element (require reductions/atomics) - Medium→Hard: 15_sorting, 36_radix_sort, 46_bfs_shortest_path, 74_gpt2_block (multi-pass/graph/complex composition) - Hard→Medium: 11_3d_convolution (independent per-element, just nested loops over 3 dims) Also update easy→medium starters to match medium style (remove kernel scaffold, remove parenthetical from device pointer comments). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
43_count_array_element,44_count_2d_array_element— require reductions/atomics, not independent per-element ops15_sorting,36_radix_sort,46_bfs_shortest_path,74_gpt2_block— multi-pass algorithms, graph traversal, or complex model composition11_3d_convolution— independently computable per-element (just nested loops over 3 spatial dims, same pattern as 2D conv which is medium)Also updates easy→medium starters to match medium style: removes kernel scaffolding and parenthetical from device pointer comments.
Test plan
pre-commit run --all-filespassesget_difficulty()check-duplicated-index.ymlverifies no duplicate IDs across folders🤖 Generated with Claude Code