linked-list.class.js 27 KB

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  1. /**
  2. * @fileoverview added by tsickle
  3. * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
  4. */
  5. /**
  6. * @template T
  7. */
  8. export class LinkedList {
  9. constructor() {
  10. this.length = 0;
  11. this.asArray = [];
  12. // Array methods overriding END
  13. }
  14. /**
  15. * @param {?} position
  16. * @return {?}
  17. */
  18. get(position) {
  19. if (this.length === 0 || position < 0 || position >= this.length) {
  20. return void 0;
  21. }
  22. /** @type {?} */
  23. let current = this.head;
  24. for (let index = 0; index < position; index++) {
  25. current = current.next;
  26. }
  27. return current.value;
  28. }
  29. /**
  30. * @param {?} value
  31. * @param {?=} position
  32. * @return {?}
  33. */
  34. add(value, position = this.length) {
  35. if (position < 0 || position > this.length) {
  36. throw new Error('Position is out of the list');
  37. }
  38. /* tslint:disable-next-line: no-any*/
  39. /** @type {?} */
  40. const node = {
  41. value,
  42. next: undefined,
  43. previous: undefined
  44. };
  45. if (this.length === 0) {
  46. this.head = node;
  47. this.tail = node;
  48. this.current = node;
  49. }
  50. else {
  51. if (position === 0) {
  52. // first node
  53. node.next = this.head;
  54. this.head.previous = node;
  55. this.head = node;
  56. }
  57. else if (position === this.length) {
  58. // last node
  59. this.tail.next = node;
  60. node.previous = this.tail;
  61. this.tail = node;
  62. }
  63. else {
  64. // node in middle
  65. /** @type {?} */
  66. const currentPreviousNode = this.getNode(position - 1);
  67. /** @type {?} */
  68. const currentNextNode = currentPreviousNode.next;
  69. currentPreviousNode.next = node;
  70. currentNextNode.previous = node;
  71. node.previous = currentPreviousNode;
  72. node.next = currentNextNode;
  73. }
  74. }
  75. this.length++;
  76. this.createInternalArrayRepresentation();
  77. }
  78. /**
  79. * @param {?=} position
  80. * @return {?}
  81. */
  82. remove(position = 0) {
  83. if (this.length === 0 || position < 0 || position >= this.length) {
  84. throw new Error('Position is out of the list');
  85. }
  86. if (position === 0) {
  87. // first node
  88. this.head = this.head.next;
  89. if (this.head) {
  90. // there is no second node
  91. this.head.previous = undefined;
  92. }
  93. else {
  94. // there is no second node
  95. this.tail = undefined;
  96. }
  97. }
  98. else if (position === this.length - 1) {
  99. // last node
  100. this.tail = this.tail.previous;
  101. this.tail.next = undefined;
  102. }
  103. else {
  104. // middle node
  105. /** @type {?} */
  106. const removedNode = this.getNode(position);
  107. removedNode.next.previous = removedNode.previous;
  108. removedNode.previous.next = removedNode.next;
  109. }
  110. this.length--;
  111. this.createInternalArrayRepresentation();
  112. }
  113. /**
  114. * @param {?} position
  115. * @param {?} value
  116. * @return {?}
  117. */
  118. set(position, value) {
  119. if (this.length === 0 || position < 0 || position >= this.length) {
  120. throw new Error('Position is out of the list');
  121. }
  122. /** @type {?} */
  123. const node = this.getNode(position);
  124. node.value = value;
  125. this.createInternalArrayRepresentation();
  126. }
  127. /**
  128. * @return {?}
  129. */
  130. toArray() {
  131. return this.asArray;
  132. }
  133. /* tslint:disable-next-line: no-any*/
  134. /**
  135. * @param {?} fn
  136. * @return {?}
  137. */
  138. findAll(fn) {
  139. /** @type {?} */
  140. let current = this.head;
  141. /* tslint:disable-next-line: no-any*/
  142. /** @type {?} */
  143. const result = [];
  144. for (let index = 0; index < this.length; index++) {
  145. if (fn(current.value, index)) {
  146. result.push({ index, value: current.value });
  147. }
  148. current = current.next;
  149. }
  150. return result;
  151. }
  152. // Array methods overriding start
  153. /**
  154. * @param {...?} args
  155. * @return {?}
  156. */
  157. push(...args) {
  158. /* tslint:disable-next-line: no-any*/
  159. args.forEach((/**
  160. * @param {?} arg
  161. * @return {?}
  162. */
  163. (arg) => {
  164. this.add(arg);
  165. }));
  166. return this.length;
  167. }
  168. /**
  169. * @return {?}
  170. */
  171. pop() {
  172. if (this.length === 0) {
  173. return undefined;
  174. }
  175. /** @type {?} */
  176. const last = this.tail;
  177. this.remove(this.length - 1);
  178. return last.value;
  179. }
  180. /**
  181. * @param {...?} args
  182. * @return {?}
  183. */
  184. unshift(...args) {
  185. args.reverse();
  186. /* tslint:disable-next-line: no-any*/
  187. args.forEach((/**
  188. * @param {?} arg
  189. * @return {?}
  190. */
  191. (arg) => {
  192. this.add(arg, 0);
  193. }));
  194. return this.length;
  195. }
  196. /**
  197. * @return {?}
  198. */
  199. shift() {
  200. if (this.length === 0) {
  201. return undefined;
  202. }
  203. /** @type {?} */
  204. const lastItem = this.head.value;
  205. this.remove();
  206. return lastItem;
  207. }
  208. /* tslint:disable-next-line: no-any*/
  209. /**
  210. * @param {?} fn
  211. * @return {?}
  212. */
  213. forEach(fn) {
  214. /** @type {?} */
  215. let current = this.head;
  216. for (let index = 0; index < this.length; index++) {
  217. fn(current.value, index);
  218. current = current.next;
  219. }
  220. }
  221. /**
  222. * @param {?} value
  223. * @return {?}
  224. */
  225. indexOf(value) {
  226. /** @type {?} */
  227. let current = this.head;
  228. /** @type {?} */
  229. let position = 0;
  230. for (let index = 0; index < this.length; index++) {
  231. if (current.value === value) {
  232. position = index;
  233. break;
  234. }
  235. current = current.next;
  236. }
  237. return position;
  238. }
  239. /* tslint:disable-next-line: no-any*/
  240. /**
  241. * @param {?} fn
  242. * @return {?}
  243. */
  244. some(fn) {
  245. /** @type {?} */
  246. let current = this.head;
  247. /** @type {?} */
  248. let result = false;
  249. while (current && !result) {
  250. if (fn(current.value)) {
  251. result = true;
  252. break;
  253. }
  254. current = current.next;
  255. }
  256. return result;
  257. }
  258. /* tslint:disable-next-line: no-any*/
  259. /**
  260. * @param {?} fn
  261. * @return {?}
  262. */
  263. every(fn) {
  264. /** @type {?} */
  265. let current = this.head;
  266. /** @type {?} */
  267. let result = true;
  268. while (current && result) {
  269. if (!fn(current.value)) {
  270. result = false;
  271. }
  272. current = current.next;
  273. }
  274. return result;
  275. }
  276. /**
  277. * @return {?}
  278. */
  279. toString() {
  280. return '[Linked List]';
  281. }
  282. /* tslint:disable-next-line: no-any*/
  283. /**
  284. * @param {?} fn
  285. * @return {?}
  286. */
  287. find(fn) {
  288. /** @type {?} */
  289. let current = this.head;
  290. /** @type {?} */
  291. let result;
  292. for (let index = 0; index < this.length; index++) {
  293. if (fn(current.value, index)) {
  294. result = current.value;
  295. break;
  296. }
  297. current = current.next;
  298. }
  299. return result;
  300. }
  301. /* tslint:disable-next-line: no-any*/
  302. /**
  303. * @param {?} fn
  304. * @return {?}
  305. */
  306. findIndex(fn) {
  307. /** @type {?} */
  308. let current = this.head;
  309. /** @type {?} */
  310. let result;
  311. for (let index = 0; index < this.length; index++) {
  312. if (fn(current.value, index)) {
  313. result = index;
  314. break;
  315. }
  316. current = current.next;
  317. }
  318. return result;
  319. }
  320. /* tslint:disable-next-line: no-any*/
  321. /**
  322. * @protected
  323. * @param {?} position
  324. * @return {?}
  325. */
  326. getNode(position) {
  327. if (this.length === 0 || position < 0 || position >= this.length) {
  328. throw new Error('Position is out of the list');
  329. }
  330. /** @type {?} */
  331. let current = this.head;
  332. for (let index = 0; index < position; index++) {
  333. current = current.next;
  334. }
  335. return current;
  336. }
  337. /**
  338. * @protected
  339. * @return {?}
  340. */
  341. createInternalArrayRepresentation() {
  342. /* tslint:disable-next-line: no-any*/
  343. /** @type {?} */
  344. const outArray = [];
  345. /** @type {?} */
  346. let current = this.head;
  347. while (current) {
  348. outArray.push(current.value);
  349. current = current.next;
  350. }
  351. this.asArray = outArray;
  352. }
  353. }
  354. if (false) {
  355. /** @type {?} */
  356. LinkedList.prototype.length;
  357. /**
  358. * @type {?}
  359. * @protected
  360. */
  361. LinkedList.prototype.head;
  362. /**
  363. * @type {?}
  364. * @protected
  365. */
  366. LinkedList.prototype.tail;
  367. /**
  368. * @type {?}
  369. * @protected
  370. */
  371. LinkedList.prototype.current;
  372. /**
  373. * @type {?}
  374. * @protected
  375. */
  376. LinkedList.prototype.asArray;
  377. }
  378. //# 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class LinkedList<T> {\n  length = 0;\n  /* tslint:disable-next-line: no-any*/\n  protected head: any;\n  /* tslint:disable-next-line: no-any*/\n  protected tail: any;\n  /* tslint:disable-next-line: no-any*/\n  protected current: any;\n  protected asArray: T[] = [];\n\n  get(position: number): T {\n    if (this.length === 0 || position < 0 || position >= this.length) {\n      return void 0;\n    }\n\n    let current = this.head;\n\n    for (let index = 0; index < position; index++) {\n      current = current.next;\n    }\n\n    return current.value;\n  }\n\n  add(value: T, position: number = this.length): void {\n    if (position < 0 || position > this.length) {\n      throw new Error('Position is out of the list');\n    }\n\n    /* tslint:disable-next-line: no-any*/\n    const node: any = {\n      value,\n      next: undefined,\n      previous: undefined\n    };\n\n    if (this.length === 0) {\n      this.head = node;\n      this.tail = node;\n      this.current = node;\n    } else {\n      if (position === 0) {\n        // first node\n        node.next = this.head;\n        this.head.previous = node;\n        this.head = node;\n      } else if (position === this.length) {\n        // last node\n        this.tail.next = node;\n        node.previous = this.tail;\n        this.tail = node;\n      } else {\n        // node in middle\n        const currentPreviousNode = this.getNode(position - 1);\n        const currentNextNode = currentPreviousNode.next;\n\n        currentPreviousNode.next = node;\n        currentNextNode.previous = node;\n\n        node.previous = currentPreviousNode;\n        node.next = currentNextNode;\n      }\n    }\n    this.length++;\n    this.createInternalArrayRepresentation();\n  }\n\n  remove(position = 0): void {\n    if (this.length === 0 || position < 0 || position >= this.length) {\n      throw new Error('Position is out of the list');\n    }\n\n    if (position === 0) {\n      // first node\n      this.head = this.head.next;\n\n      if (this.head) {\n        // there is no second node\n        this.head.previous = undefined;\n      } else {\n        // there is no second node\n        this.tail = undefined;\n      }\n    } else if (position === this.length - 1) {\n      // last node\n      this.tail = this.tail.previous;\n      this.tail.next = undefined;\n    } else {\n      // middle node\n      const removedNode = this.getNode(position);\n      removedNode.next.previous = removedNode.previous;\n      removedNode.previous.next = removedNode.next;\n    }\n\n    this.length--;\n    this.createInternalArrayRepresentation();\n  }\n\n  set(position: number, value: T): void {\n    if (this.length === 0 || position < 0 || position >= this.length) {\n      throw new Error('Position is out of the list');\n    }\n\n    const node = this.getNode(position);\n    node.value = value;\n    this.createInternalArrayRepresentation();\n  }\n\n  toArray(): T[] {\n    return this.asArray;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  findAll(fn: any): any[] {\n    let current = this.head;\n    /* tslint:disable-next-line: no-any*/\n    const result: any[] = [];\n    for (let index = 0; index < this.length; index++) {\n      if (fn(current.value, index)) {\n        result.push({index, value: current.value});\n      }\n      current = current.next;\n    }\n\n    return result;\n  }\n\n  // Array methods overriding start\n  push(...args: T[]): number {\n    /* tslint:disable-next-line: no-any*/\n    args.forEach((arg: any) => {\n      this.add(arg);\n    });\n\n    return this.length;\n  }\n\n  pop(): T {\n    if (this.length === 0) {\n      return undefined;\n    }\n    const last = this.tail;\n    this.remove(this.length - 1);\n\n    return last.value;\n  }\n\n  unshift(...args: T[]): number {\n    args.reverse();\n    /* tslint:disable-next-line: no-any*/\n    args.forEach((arg: any) => {\n      this.add(arg, 0);\n    });\n\n    return this.length;\n  }\n\n  shift(): T {\n    if (this.length === 0) {\n      return undefined;\n    }\n    const lastItem = this.head.value;\n    this.remove();\n\n    return lastItem;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  forEach(fn: any): void {\n    let current = this.head;\n    for (let index = 0; index < this.length; index++) {\n      fn(current.value, index);\n      current = current.next;\n    }\n  }\n\n  indexOf(value: T): number {\n    let current = this.head;\n    let position = 0;\n\n    for (let index = 0; index < this.length; index++) {\n      if (current.value === value) {\n        position = index;\n        break;\n      }\n      current = current.next;\n    }\n\n    return position;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  some(fn: any): boolean {\n    let current = this.head;\n    let result = false;\n    while (current && !result) {\n      if (fn(current.value)) {\n        result = true;\n        break;\n      }\n      current = current.next;\n    }\n\n    return result;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  every(fn: any): boolean {\n    let current = this.head;\n    let result = true;\n    while (current && result) {\n      if (!fn(current.value)) {\n        result = false;\n      }\n      current = current.next;\n    }\n\n    return result;\n  }\n\n  toString(): string {\n    return '[Linked List]';\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  find(fn: any): T {\n    let current = this.head;\n    let result: T;\n    for (let index = 0; index < this.length; index++) {\n      if (fn(current.value, index)) {\n        result = current.value;\n        break;\n      }\n      current = current.next;\n    }\n\n    return result;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  findIndex(fn: any): number {\n    let current = this.head;\n    let result: number;\n    for (let index = 0; index < this.length; index++) {\n      if (fn(current.value, index)) {\n        result = index;\n        break;\n      }\n      current = current.next;\n    }\n\n    return result;\n  }\n\n  /* tslint:disable-next-line: no-any*/\n  protected getNode(position: number): any {\n    if (this.length === 0 || position < 0 || position >= this.length) {\n      throw new Error('Position is out of the list');\n    }\n\n    let current = this.head;\n\n    for (let index = 0; index < position; index++) {\n      current = current.next;\n    }\n\n    return current;\n  }\n\n  protected createInternalArrayRepresentation(): void {\n    /* tslint:disable-next-line: no-any*/\n    const outArray: any[] = [];\n    let current = this.head;\n\n    while (current) {\n      outArray.push(current.value);\n      current = current.next;\n    }\n    this.asArray = outArray;\n  }\n\n  // Array methods overriding END\n}\n"]}