lots of exercises in java... from https://github.com/exercism/java

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  1. {
  2. "active": true,
  3. "blurb": "Java is a very widely used Object Oriented programming language. It's safe, simple to use and portable so that you can \"write once, run anywhere\".",
  4. "exercises": [
  5. {
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  7. "difficulty": 1,
  8. "slug": "hello-world",
  9. "topics": [
  10. "strings"
  11. ],
  12. "unlocked_by": null,
  13. "uuid": "f77dc7e3-35a8-4300-a7c8-2c1765e9644d"
  14. },
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  17. "difficulty": 1,
  18. "slug": "two-fer",
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  21. "strings"
  22. ],
  23. "unlocked_by": null,
  24. "uuid": "74515d45-565b-4be2-96c4-77e58efa9257"
  25. },
  26. {
  27. "core": false,
  28. "difficulty": 2,
  29. "slug": "rna-transcription",
  30. "topics": [
  31. "strings",
  32. "loops",
  33. "maps"
  34. ],
  35. "unlocked_by": null,
  36. "uuid": "8e983ed2-62f7-439a-a144-fb8fdbdf4d30"
  37. },
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  40. "difficulty": 3,
  41. "slug": "pangram",
  42. "topics": [
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  44. "pattern_matching",
  45. "regular_expressions"
  46. ],
  47. "unlocked_by": null,
  48. "uuid": "133b0f84-bdc7-4508-a0a1-5732a7db81ef"
  49. },
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  52. "difficulty": 3,
  53. "slug": "hamming",
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  56. "loops",
  57. "strings"
  58. ],
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  60. "uuid": "ce899ca6-9cc7-47ba-b76f-1bbcf2630b76"
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  64. "difficulty": 3,
  65. "slug": "gigasecond",
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  68. "integers",
  69. "time"
  70. ],
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  72. "uuid": "bf1641c8-dc0d-4d38-9cfe-b4c132ea3553"
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  77. "slug": "space-age",
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  80. "floating_point_numbers",
  81. "mathematics"
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  89. "slug": "acronym",
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  92. "strings",
  93. "searching",
  94. "parsing"
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  144. "conditionals",
  145. "integers",
  146. "mathematics",
  147. "transforming",
  148. "cryptography",
  149. "enumerations",
  150. "bitwise_operations"
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  158. "slug": "perfect-numbers",
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  163. "enumerations",
  164. "filtering"
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  176. "arrays",
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  185. "difficulty": 4,
  186. "slug": "luhn",
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  189. "booleans",
  190. "loops",
  191. "mathematics",
  192. "strings",
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  224. "slug": "largest-series-product",
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  227. "type_conversion",
  228. "integers",
  229. "strings",
  230. "mathematics"
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  238. "slug": "sieve",
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  241. "lists",
  242. "integers",
  243. "algorithms",
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  251. "difficulty": 4,
  252. "slug": "twelve-days",
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  255. "arrays",
  256. "conditionals",
  257. "loops"
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  264. "difficulty": 4,
  265. "slug": "rotational-cipher",
  266. "topics": [
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  268. "strings",
  269. "cryptography"
  270. ],
  271. "unlocked_by": null,
  272. "uuid": "9eb41883-55ef-4681-b5ac-5c2259302772"
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  276. "difficulty": 4,
  277. "slug": "kindergarten-garden",
  278. "topics": [
  279. "loops",
  280. "arrays",
  281. "strings",
  282. "logic",
  283. "pattern_recognition",
  284. "enumerations",
  285. "lists"
  286. ],
  287. "unlocked_by": "matrix",
  288. "uuid": "0b92ffee-c092-4ab1-ad78-76c8cf80e1b5"
  289. },
  290. {
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  292. "difficulty": 4,
  293. "slug": "collatz-conjecture",
  294. "topics": [
  295. "exception_handling",
  296. "recursion",
  297. "conditionals",
  298. "integers",
  299. "mathematics"
  300. ],
  301. "unlocked_by": "triangle",
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  306. "difficulty": 4,
  307. "slug": "nth-prime",
  308. "topics": [
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  310. "exception_handling",
  311. "lists",
  312. "loops",
  313. "integers"
  314. ],
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  320. "difficulty": 4,
  321. "slug": "saddle-points",
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  323. "unlocked_by": null,
  324. "uuid": "8dfc2f0d-1141-46e9-95e2-6f35ccf6f160"
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  326. {
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  328. "difficulty": 4,
  329. "slug": "diamond",
  330. "topics": [
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  332. "loops",
  333. "arrays",
  334. "lists",
  335. "text_formatting"
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  337. "unlocked_by": "two-fer",
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  340. {
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  342. "difficulty": 4,
  343. "slug": "isogram",
  344. "topics": [
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  346. "loops",
  347. "parsing",
  348. "strings"
  349. ],
  350. "unlocked_by": "hello-world",
  351. "uuid": "c3e89c7c-3a8a-4ddc-b653-9b0ff9e1d7d8"
  352. },
  353. {
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  355. "difficulty": 5,
  356. "slug": "flatten-array",
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  358. "arrays",
  359. "lists",
  360. "loops",
  361. "recursion"
  362. ],
  363. "unlocked_by": null,
  364. "uuid": "a732a838-8170-458a-a85e-d6b4c46f97a1"
  365. },
  366. {
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  368. "difficulty": 5,
  369. "slug": "pig-latin",
  370. "topics": [
  371. "arrays",
  372. "lists",
  373. "strings",
  374. "transforming"
  375. ],
  376. "unlocked_by": "hello-world",
  377. "uuid": "38bc80ae-d842-4c04-a797-48edf322504d"
  378. },
  379. {
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  381. "difficulty": 5,
  382. "slug": "phone-number",
  383. "topics": [
  384. "conditionals",
  385. "pattern_matching",
  386. "strings",
  387. "regular_expressions"
  388. ],
  389. "unlocked_by": "hamming",
  390. "uuid": "5f9139e7-9fbb-496a-a0d7-a946283033de"
  391. },
  392. {
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  394. "difficulty": 5,
  395. "slug": "nucleotide-count",
  396. "topics": [
  397. "conditionals",
  398. "exception_handling",
  399. "integers",
  400. "maps",
  401. "parsing",
  402. "searching",
  403. "strings"
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  405. "unlocked_by": "hamming",
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  408. {
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  410. "difficulty": 5,
  411. "slug": "word-count",
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  413. "unlocked_by": null,
  414. "uuid": "3603b770-87a5-4758-91f3-b4d1f9075bc1"
  415. },
  416. {
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  418. "difficulty": 5,
  419. "slug": "run-length-encoding",
  420. "topics": null,
  421. "unlocked_by": "rotational-cipher",
  422. "uuid": "4499a3f9-73a7-48bf-8753-d5b6abf588c9"
  423. },
  424. {
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  426. "difficulty": 5,
  427. "slug": "robot-name",
  428. "topics": null,
  429. "unlocked_by": null,
  430. "uuid": "d7c2eed9-64c7-4c4a-b45d-c787d460337f"
  431. },
  432. {
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  434. "difficulty": 5,
  435. "slug": "prime-factors",
  436. "topics": [
  437. "arrays",
  438. "conditionals",
  439. "integers",
  440. "lists",
  441. "loops",
  442. "mathematics"
  443. ],
  444. "unlocked_by": "triangle",
  445. "uuid": "599c08ec-7338-46ed-99f8-a76f78f724e6"
  446. },
  447. {
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  449. "difficulty": 5,
  450. "slug": "allergies",
  451. "topics": [
  452. "booleans",
  453. "conditionals",
  454. "enumerations",
  455. "integers",
  456. "lists",
  457. "loops"
  458. ],
  459. "unlocked_by": "gigasecond",
  460. "uuid": "6a617ddb-04e3-451c-bb30-27ccd0be9125"
  461. },
  462. {
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  464. "difficulty": 5,
  465. "slug": "bob",
  466. "topics": [
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  468. "conditionals",
  469. "strings"
  470. ],
  471. "unlocked_by": "two-fer",
  472. "uuid": "34cd328c-cd96-492b-abd4-2b8716cdcd9a"
  473. },
  474. {
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  476. "difficulty": 5,
  477. "slug": "pascals-triangle",
  478. "topics": [
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  480. "matrices",
  481. "algorithms",
  482. "mathematics",
  483. "exception_handling",
  484. "integers"
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  486. "unlocked_by": "matrix",
  487. "uuid": "d2a76905-1c8c-4b03-b4f7-4fbff19329f3"
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  499. "difficulty": 5,
  500. "slug": "series",
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  504. "loops",
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  506. "type_conversion"
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  530. "slug": "roman-numerals",
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  534. "loops",
  535. "integers",
  536. "strings",
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  545. "slug": "transpose",
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  548. "arrays",
  549. "lists",
  550. "matrices",
  551. "strings",
  552. "text_formatting"
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  560. "slug": "house",
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  563. "uuid": "6b51aca3-3451-4a64-ad7b-00b151d7548a"
  564. },
  565. {
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  567. "difficulty": 6,
  568. "slug": "food-chain",
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  572. "strings"
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  576. },
  577. {
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  579. "difficulty": 6,
  580. "slug": "beer-song",
  581. "topics": [
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  583. "loops",
  584. "variables",
  585. "text_formatting",
  586. "conditionals"
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  591. {
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  593. "difficulty": 6,
  594. "slug": "queen-attack",
  595. "topics": [
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  597. "matrices",
  598. "conditionals",
  599. "classes",
  600. "games",
  601. "mathematics"
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  603. "unlocked_by": "scrabble-score",
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