Javaトラックの管理

このページでは、Javaトラックを管理するために必要な情報とツールをExercismコミュニティに提供します。

受講生
283,284
提出数
4,878,880
メンタリングのディスカッション
17,725

Javaトラック 正常です ✅

構築中

Javaのシラバス

もっと詳しく

トラックのシラバス作成にご協力ください。シラバスは、プログラミング言語の基礎を教えるためにまとめられた、概念と学習用演習のセットです。

次の目標:少なくとも30個の概念を含む完全なシラバスを作成する。 詳しくはこちら
教えているコンセプト26個
Ba
Basics
学習済み61,648人
Bo
Booleans
学習済み35,720人
Ar
Arrays
学習済み18,398人
Fo
For Loops
学習済み18,398人
Fo
For-Each Loops
学習済み18,398人
Ge
Generic Types
学習済み13,310人
Li
Lists
学習済み13,310人
Ex
Exceptions
学習済み6,868人
Ch
Chars
学習済み11,720人
Cl
Classes
学習済み12,549人
Co
Constructors
学習済み9,176人
In
Interfaces
学習済み6,800人
If
If-Else Statements
学習済み18,693人
Nu
Numbers
学習済み18,693人
St
Strings
学習済み23,602人
Te
Ternary Operators
学習済み11,012人
Sw
Switch Statements
学習済み7,958人
In
Inheritance
学習済み7,167人
En
Enums
学習済み4,280人
Nu
Nullability
学習済み7,629人
Ra
Randomness
学習済み4,969人
Da
Date-Time
学習済み5,158人
Me
Method Overloading
学習済み3,567人
Bi
Bit Manipulation
学習済み4,571人
Se
Sets
学習済み3,480人
Ma
Maps
学習済み2,603人
有効な学習演習22個
開始
挑戦回数
完了数
メンタリング依頼
Cook Your Lasagna Cook Your Lasagna
101,820
556,151(平均5.5)
61,648 (60.5%)
495 (0.5%)
Annalyn's Infiltration Annalyn's Infiltration
48,077
445,194(平均9.3)
35,720 (74.3%)
314 (0.7%)
Bird Watcher Bird Watcher
22,456
304,233(平均13.5)
18,398 (81.9%)
480 (2.1%)
Karl's Languages Karl's Languages
14,851
83,936(平均5.7)
13,310 (89.6%)
113 (0.8%)
Calculator Conundrum Calculator Conundrum
8,441
111,728(平均13.2)
6,868 (81.4%)
115 (1.4%)
Squeaky Clean Squeaky Clean
17,405
253,609(平均14.6)
11,720 (67.3%)
495 (2.8%)
Jedlik's Toy Car Jedlik's Toy Car
13,766
118,837(平均8.6)
12,549 (91.2%)
154 (1.1%)
Need for Speed Need for Speed
10,534
130,554(平均12.4)
9,176 (87.1%)
77 (0.7%)
Remote Control Competition Remote Control Competition
8,543
90,504(平均10.6)
6,800 (79.6%)
103 (1.2%)
Cars, Assemble! Cars, Assemble!
20,846
154,077(平均7.4)
18,693 (89.7%)
416 (2.0%)
Log Levels Log Levels
36,095
319,776(平均8.9)
23,602 (65.4%)
302 (0.8%)
Salary Calculator Salary Calculator
11,874
69,813(平均5.9)
11,012 (92.7%)
42 (0.4%)
Football Match Reports Football Match Reports
8,257
34,123(平均4.1)
7,958 (96.4%)
56 (0.7%)
Wizards and Warriors Wizards and Warriors
7,885
57,947(平均7.3)
7,167 (90.9%)
39 (0.5%)
Logs, Logs, Logs! Logs, Logs, Logs!
5,011
50,683(平均10.1)
4,280 (85.4%)
61 (1.2%)
Tim from Marketing Tim from Marketing
8,086
53,207(平均6.6)
7,629 (94.3%)
66 (0.8%)
Captain's Log Captain's Log
5,294
32,789(平均6.2)
4,969 (93.9%)
21 (0.4%)
Booking Up For Beauty Booking Up For Beauty
6,232
82,766(平均13.3)
5,158 (82.8%)
52 (0.8%)
Wizards and Warriors 2 Wizards and Warriors 2
3,930
34,236(平均8.7)
3,567 (90.8%)
20 (0.5%)
Secrets Secrets
5,257
28,457(平均5.4)
4,571 (87.0%)
7 (0.1%)
Gotta Snatch 'Em All Gotta Snatch 'Em All
4,045
48,365(平均12.0)
3,480 (86.0%)
57 (1.4%)
International Calling Connoisseur International Calling Connoisseur
3,035
32,788(平均10.8)
2,603 (85.8%)
28 (0.9%)
非推奨の学習演習1個
開始
挑戦回数
完了数
メンタリング依頼
Play Your Cards! Play Your Cards!
8,676
85,964(平均9.9)
6,859 (79.1%)
121 (1.4%)

練習用の演習

もっと詳しく

練習用の演習は、学習者がこれまでに学んだコンセプトを活かして、自由な問題を解けるように設計された演習です。

同期済みのメインリポジトリ: 9b54e9a017b84d2f62a9bbbe4f9f47dd55c2ab2d (更新はすぐに反映されます)

次の目標:139件のプラクティス演習を実装する。 詳しく見る。
136件のアクティブなプラクティス演習
開始
試行回数
完了
メンタリングのリクエスト
Hello World Hello World
222,549
450,769(平均2.0)
136,599 (61.4%)
40 (0.0%)
Leap Leap
8,532
32,334(平均3.8)
6,910 (81.0%)
118 (1.4%)
Reverse String Reverse String
16,186
48,823(平均3.0)
13,530 (83.6%)
331 (2.0%)
Two Fer Two Fer
24,355
78,172(平均3.2)
19,423 (79.7%)
3,928 (16.1%)
Armstrong Numbers Armstrong Numbers
7,671
27,177(平均3.5)
6,153 (80.2%)
149 (1.9%)
Darts Darts
7,641
26,662(平均3.5)
6,047 (79.1%)
67 (0.9%)
D&D Character D&D Character
5,161
43,020(平均8.3)
3,653 (70.8%)
77 (1.5%)
DOT DSL DOT DSL
1,701
7,849(平均4.6)
1,058 (62.2%)
8 (0.5%)
Grains Grains
5,137
40,370(平均7.9)
4,172 (81.2%)
55 (1.1%)
High Scores High Scores
2,907
23,101(平均7.9)
2,327 (80.0%)
38 (1.3%)
Resistor Color Resistor Color
6,867
25,984(平均3.8)
5,562 (81.0%)
74 (1.1%)
Resistor Color Duo Resistor Color Duo
4,881
16,180(平均3.3)
4,145 (84.9%)
47 (1.0%)
Resistor Color Trio Resistor Color Trio
1,869
21,004(平均11.2)
1,590 (85.1%)
40 (2.1%)
RNA Transcription RNA Transcription
6,938
18,411(平均2.7)
5,876 (84.7%)
243 (3.5%)
Acronym Acronym
4,886
21,518(平均4.4)
3,927 (80.4%)
99 (2.0%)
Difference of Squares Difference of Squares
7,191
24,376(平均3.4)
6,306 (87.7%)
711 (9.9%)
Gigasecond Gigasecond
8,776
20,974(平均2.4)
6,337 (72.2%)
1,345 (15.3%)
Hamming Hamming
8,794
33,189(平均3.8)
7,259 (82.5%)
1,495 (17.0%)
Micro Blog Micro Blog
6,984
39,187(平均5.6)
4,313 (61.8%)
104 (1.5%)
Pangram Pangram
5,738
15,623(平均2.7)
4,792 (83.5%)
173 (3.0%)
Perfect Numbers Perfect Numbers
3,765
14,491(平均3.8)
2,676 (71.1%)
54 (1.4%)
Eliud's Eggs Eliud's Eggs
1,397
4,495(平均3.2)
1,254 (89.8%)
17 (1.2%)
Protein Translation Protein Translation
3,873
20,124(平均5.2)
3,057 (78.9%)
62 (1.6%)
Raindrops Raindrops
8,487
22,481(平均2.6)
7,176 (84.6%)
258 (3.0%)
Say Say
2,917
19,647(平均6.7)
1,343 (46.0%)
41 (1.4%)
Scrabble Score Scrabble Score
6,445
23,483(平均3.6)
5,448 (84.5%)
1,085 (16.8%)
Secret Handshake Secret Handshake
4,374
21,904(平均5.0)
3,368 (77.0%)
467 (10.7%)
Space Age Space Age
4,737
10,992(平均2.3)
3,663 (77.3%)
65 (1.4%)
Collatz Conjecture Collatz Conjecture
2,395
9,513(平均4.0)
1,978 (82.6%)
38 (1.6%)
Diamond Diamond
3,017
16,143(平均5.4)
1,993 (66.1%)
57 (1.9%)
Error Handling Error Handling
2,105
15,042(平均7.1)
1,225 (58.2%)
7 (0.3%)
ISBN Verifier ISBN Verifier
2,913
14,385(平均4.9)
2,295 (78.8%)
44 (1.5%)
Isogram Isogram
5,343
20,477(平均3.8)
4,333 (81.1%)
172 (3.2%)
Killer Sudoku Helper Killer Sudoku Helper
913
4,761(平均5.2)
501 (54.9%)
18 (2.0%)
Kindergarten Garden Kindergarten Garden
1,448
5,089(平均3.5)
1,074 (74.2%)
13 (0.9%)
Largest Series Product Largest Series Product
2,108
13,068(平均6.2)
1,667 (79.1%)
23 (1.1%)
Luhn Luhn
2,793
13,914(平均5.0)
2,180 (78.1%)
51 (1.8%)
Matrix Matrix
3,449
17,856(平均5.2)
2,592 (75.2%)
314 (9.1%)
Nth Prime Nth Prime
1,630
6,332(平均3.9)
1,270 (77.9%)
21 (1.3%)
Prism Prism
146
1,034(平均7.1)
65 (44.5%)
0 (0.0%)
Proverb Proverb
2,990
8,868(平均3.0)
2,428 (81.2%)
34 (1.1%)
Rate Limiter Rate Limiter
307
1,355(平均4.4)
165 (53.7%)
4 (1.3%)
Rotational Cipher Rotational Cipher
2,595
13,084(平均5.0)
2,177 (83.9%)
226 (8.7%)
Saddle Points Saddle Points
1,955
8,925(平均4.6)
1,338 (68.4%)
161 (8.2%)
Sieve Sieve
1,603
4,645(平均2.9)
1,275 (79.5%)
25 (1.6%)
Split-Second Stopwatch Split-Second Stopwatch
229
1,895(平均8.3)
148 (64.6%)
0 (0.0%)
Sum of Multiples Sum of Multiples
2,209
8,028(平均3.6)
1,626 (73.6%)
39 (1.8%)
Swift Scheduling Swift Scheduling
206
1,934(平均9.4)
140 (68.0%)
1 (0.5%)
Triangle Triangle
3,050
12,366(平均4.1)
2,590 (84.9%)
262 (8.6%)
Twelve Days Twelve Days
2,837
15,628(平均5.5)
2,134 (75.2%)
33 (1.2%)
Variable Length Quantity Variable Length Quantity
766
3,060(平均4.0)
400 (52.2%)
2 (0.3%)
Yacht Yacht
1,697
8,282(平均4.9)
1,128 (66.5%)
31 (1.8%)
Allergies Allergies
1,444
5,116(平均3.5)
1,088 (75.3%)
25 (1.7%)
Atbash Cipher Atbash Cipher
912
5,085(平均5.6)
726 (79.6%)
8 (0.9%)
Bob Bob
2,276
13,868(平均6.1)
1,845 (81.1%)
61 (2.7%)
Flatten Array Flatten Array
1,870
8,333(平均4.5)
1,396 (74.7%)
137 (7.3%)
Conway's Game of Life Conway's Game of Life
501
2,342(平均4.7)
314 (62.7%)
1 (0.2%)
Grep Grep
786
3,982(平均5.1)
432 (55.0%)
7 (0.9%)
Knapsack Knapsack
1,029
4,759(平均4.6)
609 (59.2%)
10 (1.0%)
Ledger Ledger
460
3,261(平均7.1)
253 (55.0%)
9 (2.0%)
Matching Brackets Matching Brackets
907
3,457(平均3.8)
650 (71.7%)
10 (1.1%)
Nucleotide Count Nucleotide Count
2,232
6,666(平均3.0)
1,982 (88.8%)
91 (4.1%)
Pascal's Triangle Pascal's Triangle
891
2,452(平均2.8)
635 (71.3%)
5 (0.6%)
Phone Number Phone Number
1,619
9,420(平均5.8)
1,230 (76.0%)
26 (1.6%)
Pig Latin Pig Latin
2,773
12,269(平均4.4)
1,552 (56.0%)
76 (2.7%)
Prime Factors Prime Factors
962
2,922(平均3.0)
736 (76.5%)
11 (1.1%)
Relative Distance Relative Distance
942
5,652(平均6.0)
400 (42.5%)
8 (0.8%)
Robot Name Robot Name
1,916
10,772(平均5.6)
1,561 (81.5%)
139 (7.3%)
Run-Length Encoding Run-Length Encoding
723
3,154(平均4.4)
515 (71.2%)
9 (1.2%)
Series Series
1,081
3,270(平均3.0)
884 (81.8%)
11 (1.0%)
Square Root Square Root
636
1,922(平均3.0)
502 (78.9%)
9 (1.4%)
Word Count Word Count
2,963
17,250(平均5.8)
2,255 (76.1%)
213 (7.2%)
State Of Tic Tac Toe State Of Tic Tac Toe
380
2,579(平均6.8)
229 (60.3%)
6 (1.6%)
Affine Cipher Affine Cipher
424
3,148(平均7.4)
277 (65.3%)
4 (0.9%)
All Your Base All Your Base
572
2,922(平均5.1)
389 (68.0%)
2 (0.3%)
Alphametics Alphametics
609
2,657(平均4.4)
249 (40.9%)
3 (0.5%)
Baffling Birthdays Baffling Birthdays
90
411(平均4.6)
53 (58.9%)
0 (0.0%)
Bank Account Bank Account
1,751
9,503(平均5.4)
1,201 (68.6%)
96 (5.5%)
Binary Search Binary Search
1,414
7,806(平均5.5)
1,064 (75.2%)
94 (6.6%)
Bottle Song Bottle Song
859
7,695(平均9.0)
543 (63.2%)
19 (2.2%)
Bowling Bowling
1,017
8,270(平均8.1)
437 (43.0%)
11 (1.1%)
Camicia Camicia
41
345(平均8.4)
23 (56.1%)
0 (0.0%)
ETL ETL
1,869
2,912(平均1.6)
1,682 (90.0%)
128 (6.8%)
Flower Field Flower Field
115
491(平均4.3)
78 (67.8%)
0 (0.0%)
Food Chain Food Chain
931
3,541(平均3.8)
623 (66.9%)
11 (1.2%)
Grade School Grade School
895
3,042(平均3.4)
640 (71.5%)
22 (2.5%)
House House
1,004
3,761(平均3.7)
718 (71.5%)
10 (1.0%)
Intergalactic Transmission Intergalactic Transmission
920
1,846(平均2.0)
101 (11.0%)
5 (0.5%)
Linked List Linked List
1,468
6,366(平均4.3)
1,035 (70.5%)
78 (5.3%)
Parallel Letter Frequency Parallel Letter Frequency
796
3,685(平均4.6)
491 (61.7%)
13 (1.6%)
Piecing It Together Piecing It Together
82
761(平均9.3)
42 (51.2%)
0 (0.0%)
Queen Attack Queen Attack
2,076
7,877(平均3.8)
778 (37.5%)
34 (1.6%)
Rail Fence Cipher Rail Fence Cipher
402
1,567(平均3.9)
242 (60.2%)
1 (0.2%)
REST API REST API
794
4,387(平均5.5)
196 (24.7%)
5 (0.6%)
Robot Simulator Robot Simulator
859
2,758(平均3.2)
544 (63.3%)
10 (1.2%)
Roman Numerals Roman Numerals
1,226
3,793(平均3.1)
895 (73.0%)
15 (1.2%)
Spiral Matrix Spiral Matrix
633
1,607(平均2.5)
397 (62.7%)
6 (0.9%)
Tournament Tournament
783
3,846(平均4.9)
398 (50.8%)
10 (1.3%)
Transpose Transpose
579
2,968(平均5.1)
316 (54.6%)
2 (0.3%)
Wordy Wordy
607
2,783(平均4.6)
358 (59.0%)
6 (1.0%)
Anagram Anagram
3,200
10,471(平均3.3)
2,299 (71.8%)
114 (3.6%)
Binary Search Tree Binary Search Tree
688
2,936(平均4.3)
388 (56.4%)
9 (1.3%)
Clock Clock
573
2,390(平均4.2)
386 (67.4%)
3 (0.5%)
Crypto Square Crypto Square
469
1,879(平均4.0)
316 (67.4%)
3 (0.6%)
Dominoes Dominoes
1,098
3,192(平均2.9)
293 (26.7%)
9 (0.8%)
Go Counting Go Counting
514
1,502(平均2.9)
190 (37.0%)
0 (0.0%)
Markdown Markdown
952
2,238(平均2.4)
394 (41.4%)
14 (1.5%)
Meetup Meetup
916
2,448(平均2.7)
709 (77.4%)
13 (1.4%)
Poker Poker
778
2,691(平均3.5)
237 (30.5%)
6 (0.8%)
SGF Parsing SGF Parsing
157
1,947(平均12.4)
87 (55.4%)
2 (1.3%)
Simple Linked List Simple Linked List
785
4,049(平均5.2)
470 (59.9%)
10 (1.3%)
Sublist Sublist
520
1,846(平均3.6)
332 (63.8%)
0 (0.0%)
Tree Building Tree Building
351
845(平均2.4)
160 (45.6%)
3 (0.9%)
Two Bucket Two Bucket
407
1,185(平均2.9)
180 (44.2%)
3 (0.7%)
Word Search Word Search
897
2,578(平均2.9)
284 (31.7%)
5 (0.6%)
Zebra Puzzle Zebra Puzzle
3,189
2,879(平均0.9)
522 (16.4%)
12 (0.4%)
Zipper Zipper
331
966(平均2.9)
146 (44.1%)
0 (0.0%)
Book Store Book Store
674
2,325(平均3.4)
234 (34.7%)
6 (0.9%)
Change Change
575
3,383(平均5.9)
241 (41.9%)
4 (0.7%)
Circular Buffer Circular Buffer
616
2,432(平均3.9)
375 (60.9%)
5 (0.8%)
Complex Numbers Complex Numbers
665
2,314(平均3.5)
417 (62.7%)
11 (1.7%)
Connect Connect
359
1,804(平均5.0)
187 (52.1%)
7 (1.9%)
Hangman Hangman
378
1,129(平均3.0)
101 (26.7%)
6 (1.6%)
List Ops List Ops
559
2,358(平均4.2)
300 (53.7%)
9 (1.6%)
Mazy Mice Mazy Mice
155
716(平均4.6)
71 (45.8%)
4 (2.6%)
OCR Numbers OCR Numbers
395
842(平均2.1)
211 (53.4%)
3 (0.8%)
Palindrome Products Palindrome Products
483
1,464(平均3.0)
256 (53.0%)
5 (1.0%)
POV POV
169
780(平均4.6)
82 (48.5%)
1 (0.6%)
Rational Numbers Rational Numbers
524
3,367(平均6.4)
282 (53.8%)
6 (1.1%)
React React
275
1,137(平均4.1)
90 (32.7%)
2 (0.7%)
Rectangles Rectangles
374
886(平均2.4)
188 (50.3%)
4 (1.1%)
Simple Cipher Simple Cipher
537
1,806(平均3.4)
347 (64.6%)
7 (1.3%)
Forth Forth
529
1,849(平均3.5)
217 (41.0%)
13 (2.5%)
Pythagorean Triplet Pythagorean Triplet
1,087
6,718(平均6.2)
472 (43.4%)
7 (0.6%)
Custom Set Custom Set
596
2,096(平均3.5)
268 (45.0%)
5 (0.8%)
Satellite Satellite
531
1,135(平均2.1)
179 (33.7%)
4 (0.8%)
9件の非推奨のプラクティス演習
開始
試行回数
完了
メンタリングのリクエスト
Accumulate Accumulate
110
138(平均1.3)
107 (97.3%)
5 (4.5%)
Beer Song Beer Song
867
3,388(平均3.9)
664 (76.6%)
15 (1.7%)
Binary Binary
136
181(平均1.3)
134 (98.5%)
6 (4.4%)
Diffie-Hellman Diffie-Hellman
228
327(平均1.4)
117 (51.3%)
2 (0.9%)
Hexadecimal Hexadecimal
58
74(平均1.3)
56 (96.6%)
7 (12.1%)
Minesweeper Minesweeper
795
2,853(平均3.6)
519 (65.3%)
9 (1.1%)
Octal Octal
59
70(平均1.2)
57 (96.6%)
2 (3.4%)
Strain Strain
111
141(平均1.3)
108 (97.3%)
5 (4.5%)
Trinary Trinary
71
85(平均1.2)
69 (97.2%)
1 (1.4%)
3件の未実装のプラクティス演習
Save the Cow Save the Cow
1件の見送られたプラクティス演習
Lens Person Lens Person

テストランナー

もっと詳しく

解答を受け取り、すべてのテストを実行し、標準化された出力を返すという単一の責務を持つテストランナーを作成します。

現在のバージョン: 149e8132a1ca50237d80ccbf402cc1104dc41eb1 (デプロイに最大10分かかります)

テストランナーの総実行回数
4,792,682
テスト実行の合格率
17.3% (827625)
テスト実行の失敗率
38.1% (1828255)
テスト実行のエラー率
44.6% (2136802)

リプリゼンター

もっと詳しく

リプリゼンターを作りましょう。リプリゼンターとは、解答を受け取り、それを正規化表現として返すという単一の責務だけを持つ小さなコードです。

現在のバージョン: c84371546bbb96407e400b7e18d7fcc204a0b29c (配信まで最大10分かかります)

リプリゼンターの総実行回数
945,057
正規化表現へのコメントの総数
109,095
フィードバックの提供頻度
11.5%

アナライザー

もっと詳しく

Javaのアナライザーを作りましょう。Exercismのアナライザーは、学習者の提出物を自動で評価し、メンターのようなコメントを返します。

現在のバージョン: 3b609b65df1ca5622fea622d4d1169013ad1f7a5 (デプロイには最大10分かかります)

アナライザー実行回数の合計
660,336
分析コメントの総数
426,537
フィードバックの頻度
4.3%