{"id":"build-tree-level-order","text":"`_build_tree(values)` constructs a tree from a level-order (BFS) list where `None` represents absent children, matching LeetCode's standard serialization format; it is used across tree-problem test suites","truth_value":"IN","source":"entries/2026/06/06/range-sum-of-bst-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":["de-facto-treenode-infra-efficient"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"build-tree-level-order","truth_value":"IN","reason":"premise"}]}}