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",
  19. "topics": [
  20. "conditionals",
  21. "strings"
  22. ],
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  24. "uuid": "74515d45-565b-4be2-96c4-77e58efa9257"
  25. },
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  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. },
  38. {
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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. },
  50. {
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  52. "difficulty": 3,
  53. "slug": "hamming",
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  55. "integers",
  56. "loops",
  57. "strings"
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  60. "uuid": "ce899ca6-9cc7-47ba-b76f-1bbcf2630b76"
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  63. "core": true,
  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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  140. "difficulty": 3,
  141. "slug": "secret-handshake",
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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",
  159. "topics": [
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  161. "mathematics",
  162. "exception_handling",
  163. "enumerations",
  164. "filtering"
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  176. "arrays",
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  186. "slug": "luhn",
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  189. "booleans",
  190. "loops",
  191. "mathematics",
  192. "strings",
  193. "type_conversion"
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  206. "integers",
  207. "strings",
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  223. "difficulty": 4,
  224. "slug": "largest-series-product",
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  228. "integers",
  229. "strings",
  230. "mathematics"
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  237. "difficulty": 4,
  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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  259. "unlocked_by": "two-fer",
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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"
  273. },
  274. {
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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"
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  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. ],
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  304. {
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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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  317. },
  318. {
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  320. "difficulty": 4,
  321. "slug": "saddle-points",
  322. "topics": [
  323. "arrays",
  324. "conditionals",
  325. "integers",
  326. "lists",
  327. "loops",
  328. "mathematics",
  329. "matrices",
  330. "sets"
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  335. {
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  337. "difficulty": 4,
  338. "slug": "diamond",
  339. "topics": [
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  341. "loops",
  342. "arrays",
  343. "lists",
  344. "text_formatting"
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  346. "unlocked_by": "two-fer",
  347. "uuid": "ecbd997b-86f4-4e11-9ff0-706ac2899415"
  348. },
  349. {
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  351. "difficulty": 4,
  352. "slug": "isogram",
  353. "topics": [
  354. "conditionals",
  355. "loops",
  356. "parsing",
  357. "strings"
  358. ],
  359. "unlocked_by": "hello-world",
  360. "uuid": "c3e89c7c-3a8a-4ddc-b653-9b0ff9e1d7d8"
  361. },
  362. {
  363. "core": true,
  364. "difficulty": 5,
  365. "slug": "flatten-array",
  366. "topics": [
  367. "arrays",
  368. "lists",
  369. "loops",
  370. "recursion"
  371. ],
  372. "unlocked_by": null,
  373. "uuid": "a732a838-8170-458a-a85e-d6b4c46f97a1"
  374. },
  375. {
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  377. "difficulty": 5,
  378. "slug": "pig-latin",
  379. "topics": [
  380. "arrays",
  381. "lists",
  382. "strings",
  383. "transforming"
  384. ],
  385. "unlocked_by": "hello-world",
  386. "uuid": "38bc80ae-d842-4c04-a797-48edf322504d"
  387. },
  388. {
  389. "core": false,
  390. "difficulty": 5,
  391. "slug": "phone-number",
  392. "topics": [
  393. "conditionals",
  394. "pattern_matching",
  395. "strings",
  396. "regular_expressions"
  397. ],
  398. "unlocked_by": "hamming",
  399. "uuid": "5f9139e7-9fbb-496a-a0d7-a946283033de"
  400. },
  401. {
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  403. "difficulty": 5,
  404. "slug": "nucleotide-count",
  405. "topics": [
  406. "conditionals",
  407. "exception_handling",
  408. "integers",
  409. "maps",
  410. "parsing",
  411. "searching",
  412. "strings"
  413. ],
  414. "unlocked_by": "hamming",
  415. "uuid": "2d80fdfc-5bd7-4b67-9fbe-8ab820d89051"
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  417. {
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  419. "difficulty": 5,
  420. "slug": "word-count",
  421. "topics": null,
  422. "unlocked_by": null,
  423. "uuid": "3603b770-87a5-4758-91f3-b4d1f9075bc1"
  424. },
  425. {
  426. "core": false,
  427. "difficulty": 5,
  428. "slug": "run-length-encoding",
  429. "topics": null,
  430. "unlocked_by": "rotational-cipher",
  431. "uuid": "4499a3f9-73a7-48bf-8753-d5b6abf588c9"
  432. },
  433. {
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  435. "difficulty": 5,
  436. "slug": "robot-name",
  437. "topics": null,
  438. "unlocked_by": null,
  439. "uuid": "d7c2eed9-64c7-4c4a-b45d-c787d460337f"
  440. },
  441. {
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  443. "difficulty": 5,
  444. "slug": "prime-factors",
  445. "topics": [
  446. "arrays",
  447. "conditionals",
  448. "integers",
  449. "lists",
  450. "loops",
  451. "mathematics"
  452. ],
  453. "unlocked_by": "triangle",
  454. "uuid": "599c08ec-7338-46ed-99f8-a76f78f724e6"
  455. },
  456. {
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  458. "difficulty": 5,
  459. "slug": "allergies",
  460. "topics": [
  461. "booleans",
  462. "conditionals",
  463. "enumerations",
  464. "integers",
  465. "lists",
  466. "loops"
  467. ],
  468. "unlocked_by": "gigasecond",
  469. "uuid": "6a617ddb-04e3-451c-bb30-27ccd0be9125"
  470. },
  471. {
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  473. "difficulty": 5,
  474. "slug": "bob",
  475. "topics": [
  476. "booleans",
  477. "conditionals",
  478. "strings"
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  480. "unlocked_by": "two-fer",
  481. "uuid": "34cd328c-cd96-492b-abd4-2b8716cdcd9a"
  482. },
  483. {
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  485. "difficulty": 5,
  486. "slug": "pascals-triangle",
  487. "topics": [
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  489. "matrices",
  490. "algorithms",
  491. "mathematics",
  492. "exception_handling",
  493. "integers"
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  501. "slug": "bracket-push",
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  512. "slug": "series",
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  515. "lists",
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  518. "type_conversion"
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  526. "slug": "atbash-cipher",
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  529. "cryptography",
  530. "security"
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  545. "difficulty": 6,
  546. "slug": "roman-numerals",
  547. "topics": [
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  549. "mathematics",
  550. "loops",
  551. "integers",
  552. "strings",
  553. "maps"
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  556. "uuid": "3e728cd4-5e5f-4c69-8a53-bc36d020fcdb"
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  558. {
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  560. "difficulty": 6,
  561. "slug": "transpose",
  562. "topics": [
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  564. "arrays",
  565. "lists",
  566. "matrices",
  567. "strings",
  568. "text_formatting"
  569. ],
  570. "unlocked_by": "matrix",
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  573. {
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  576. "slug": "house",
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  578. "unlocked_by": "two-fer",
  579. "uuid": "6b51aca3-3451-4a64-ad7b-00b151d7548a"
  580. },
  581. {
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  584. "slug": "food-chain",
  585. "topics": [
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  587. "lists",
  588. "strings"
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  590. "unlocked_by": "two-fer",
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  593. {
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  596. "slug": "beer-song",
  597. "topics": [
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  599. "loops",
  600. "variables",
  601. "text_formatting",
  602. "conditionals"
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