ErrLookup › trekhleb/javascript-algorithms
trekhleb/javascript-algorithms
📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings · JavaScript · 182 source files
Analyzed at 85293e3e2b on 2026-08-24. 31 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Matrices have different dimensions | exception | error | matrix, shape-validation, math, rank-mismatch |
| You have to implement heap pair comparison method for | exception | error | heap, abstract-method, subclassing, priority-queue, data-structures |
| sort method must be implemented | exception | error | sorting, abstract-method, inheritance, oop |
| One or two values are not in sets | exception | error | disjoint-set, union-find, precondition, make-set, kruskal |
| Matrices have different shapes | exception | error | matrix, shape-validation, math, off-by-one |
| Matrices have incompatible shape for multiplication | exception | error | matrix, multiplication, linear-algebra, dimension-mismatch, math |
| Left index can not be greater than right one | exception | error | fenwick-tree, binary-indexed-tree, argument-validation, range-query, data-structures |
| Edge has already been added before | exception | error | graph, duplicate-edge, unique-key, multigraph, add-edge |
| Items and weights must be of the same size | exception | error | statistics, random-sampling, array-length-mismatch, validation |
| Cannot construct Heap instance directly | exception | error | heap, abstract-class, instantiation, typeerror, priority-queue |
| Strings must be of the same length | exception | error | string, hamming-distance, length-mismatch, validation |
| The data is empty | exception | error | machine-learning, k-means, clustering, null-check, validation |
| The method supports only positive integers | exception | error | math, square-root, domain-error, validation |
| Either dataSet or labels or toClassify were not set | exception | error | machine-learning, knn, classification, missing-argument, validation |
| Position is out of allowed range | exception | error | fenwick-tree, binary-indexed-tree, index-out-of-range, off-by-one, data-structures |
| Can't remove . Remove method is not implemented yet | exception | error | red-black-tree, not-implemented, remove, data-structures, balanced-tree |
| Edge not found in graph | exception | error | graph, delete-edge, precondition, idempotency |
| Item not found in the tree | exception | error | binary-search-tree, remove, item-not-found, data-structures |
| Vertex has already been added before | exception | error | graph, duplicate-vertex, unique-key, add-vertex |
| Items must not be empty | exception | error | statistics, random-sampling, empty-array, validation |
| Graph vertex must have a value | exception | error | graph, vertex, constructor, undefined-argument |
| Invalid key string length. The square root of the key… | exception | error | |
| Invalid key string length. The key length must be a square… | exception | error | |
| Can't handle position smaller than 1 or greater than | exception | error | |
| Kruskal's algorithms works only for undirected graphs | exception | error | |
| The message and key string can only contain letters | exception | error | |
| Eulerian path must contain two odd-ranked vertices | exception | error | |
| Prim's algorithms works only for undirected graphs | exception | error | |
| This method is not implemented yet | exception | error | |
| Matrix is not of 2D shape | exception | error | |
| Invalid matrix format | exception | error |