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
286,436
提出数
4,954,440
メンタリングのディスカッション
17,800

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27個
Ba
Basics
学習済み62,684人
Bo
Booleans
学習済み36,368人
Ar
Arrays
学習済み18,810人
Fo
For Loops
学習済み18,810人
Fo
For-Each Loops
学習済み18,810人
Ge
Generic Types
学習済み13,612人
Li
Lists
学習済み13,612人
Ex
Exceptions
学習済み7,076人
Ch
Chars
学習済み11,940人
Cl
Classes
学習済み12,882人
Co
Constructors
学習済み9,423人
In
Interfaces
学習済み6,984人
If
If-Else Statements
学習済み19,110人
Nu
Numbers
学習済み19,110人
St
Strings
学習済み24,028人
Te
Ternary Operators
学習済み11,254人
Sw
Switch Statements
学習済み8,139人
In
Inheritance
学習済み7,345人
En
Enums
学習済み4,391人
Nu
Nullability
学習済み7,849人
Ra
Randomness
学習済み5,107人
Da
Date-Time
学習済み5,295人
Me
Method Overloading
学習済み3,655人
Bi
Bit Manipulation
学習済み4,698人
Se
Sets
学習済み3,577人
Ma
Maps
学習済み2,713人
Te
Temporal Adjusters
学習済み44人
有効な学習演習23個
開始
挑戦回数
完了数
メンタリング依頼
Cook Your Lasagna Cook Your Lasagna
103,449
564,545(平均5.5)
62,684 (60.6%)
497 (0.5%)
Annalyn's Infiltration Annalyn's Infiltration
48,917
451,094(平均9.2)
36,368 (74.3%)
315 (0.6%)
Bird Watcher Bird Watcher
22,951
310,729(平均13.5)
18,810 (82.0%)
488 (2.1%)
Karl's Languages Karl's Languages
15,192
85,703(平均5.6)
13,612 (89.6%)
118 (0.8%)
Calculator Conundrum Calculator Conundrum
8,684
114,164(平均13.1)
7,076 (81.5%)
118 (1.4%)
Squeaky Clean Squeaky Clean
17,664
256,040(平均14.5)
11,940 (67.6%)
500 (2.8%)
Jedlik's Toy Car Jedlik's Toy Car
14,143
121,464(平均8.6)
12,882 (91.1%)
157 (1.1%)
Need for Speed Need for Speed
10,841
133,491(平均12.3)
9,423 (86.9%)
80 (0.7%)
Remote Control Competition Remote Control Competition
8,792
92,469(平均10.5)
6,984 (79.4%)
105 (1.2%)
Cars, Assemble! Cars, Assemble!
21,296
156,934(平均7.4)
19,110 (89.7%)
426 (2.0%)
Log Levels Log Levels
36,676
324,277(平均8.8)
24,028 (65.5%)
303 (0.8%)
Salary Calculator Salary Calculator
12,143
71,122(平均5.9)
11,254 (92.7%)
43 (0.4%)
Football Match Reports Football Match Reports
8,448
34,750(平均4.1)
8,139 (96.3%)
58 (0.7%)
Wizards and Warriors Wizards and Warriors
8,082
59,304(平均7.3)
7,345 (90.9%)
39 (0.5%)
Logs, Logs, Logs! Logs, Logs, Logs!
5,147
51,758(平均10.1)
4,391 (85.3%)
62 (1.2%)
Tim from Marketing Tim from Marketing
8,317
54,606(平均6.6)
7,849 (94.4%)
66 (0.8%)
Captain's Log Captain's Log
5,431
33,550(平均6.2)
5,107 (94.0%)
21 (0.4%)
Booking Up For Beauty Booking Up For Beauty
6,402
84,494(平均13.2)
5,295 (82.7%)
53 (0.8%)
Wizards and Warriors 2 Wizards and Warriors 2
4,020
34,961(平均8.7)
3,655 (90.9%)
21 (0.5%)
Secrets Secrets
5,395
29,117(平均5.4)
4,698 (87.1%)
7 (0.1%)
Gotta Snatch 'Em All Gotta Snatch 'Em All
4,153
49,353(平均11.9)
3,577 (86.1%)
58 (1.4%)
International Calling Connoisseur International Calling Connoisseur
3,163
33,916(平均10.7)
2,713 (85.8%)
33 (1.0%)
Beauty Salon Regulars Beauty Salon Regulars
67
621(平均9.3)
44 (65.7%)
1 (1.5%)
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
85,974(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: be2d006c30c50e0154231dd987d5a3b5526c0427 (更新はすぐに反映されます)

次の目標:140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
225,609
456,736(平均2.0)
138,461 (61.4%)
40 (0.0%)
Leap Leap
8,691
32,996(平均3.8)
7,044 (81.0%)
119 (1.4%)
Reverse String Reverse String
16,298
49,211(平均3.0)
13,633 (83.6%)
331 (2.0%)
Two Fer Two Fer
24,480
78,602(平均3.2)
19,530 (79.8%)
3,929 (16.0%)
Armstrong Numbers Armstrong Numbers
7,787
27,705(平均3.6)
6,258 (80.4%)
151 (1.9%)
Darts Darts
7,755
26,992(平均3.5)
6,138 (79.1%)
67 (0.9%)
D&D Character D&D Character
5,231
43,721(平均8.4)
3,712 (71.0%)
78 (1.5%)
DOT DSL DOT DSL
1,766
8,204(平均4.6)
1,108 (62.7%)
9 (0.5%)
Grains Grains
5,232
41,084(平均7.9)
4,252 (81.3%)
55 (1.1%)
High Scores High Scores
2,983
23,601(平均7.9)
2,388 (80.1%)
38 (1.3%)
Resistor Color Resistor Color
6,940
26,264(平均3.8)
5,632 (81.2%)
74 (1.1%)
Resistor Color Duo Resistor Color Duo
4,942
16,448(平均3.3)
4,202 (85.0%)
47 (1.0%)
Resistor Color Trio Resistor Color Trio
1,928
21,501(平均11.2)
1,643 (85.2%)
40 (2.1%)
RNA Transcription RNA Transcription
6,992
18,612(平均2.7)
5,927 (84.8%)
243 (3.5%)
Acronym Acronym
4,955
21,891(平均4.4)
3,984 (80.4%)
99 (2.0%)
Difference of Squares Difference of Squares
7,252
24,577(平均3.4)
6,364 (87.8%)
711 (9.8%)
Gigasecond Gigasecond
8,827
21,071(平均2.4)
6,379 (72.3%)
1,345 (15.2%)
Hamming Hamming
8,848
33,473(平均3.8)
7,310 (82.6%)
1,495 (16.9%)
Micro Blog Micro Blog
7,051
39,530(平均5.6)
4,361 (61.8%)
104 (1.5%)
Pangram Pangram
5,779
15,851(平均2.7)
4,832 (83.6%)
173 (3.0%)
Perfect Numbers Perfect Numbers
3,806
14,741(平均3.9)
2,713 (71.3%)
54 (1.4%)
Eliud's Eggs Eliud's Eggs
1,440
4,663(平均3.2)
1,296 (90.0%)
17 (1.2%)
Protein Translation Protein Translation
3,917
20,581(平均5.3)
3,097 (79.1%)
62 (1.6%)
Raindrops Raindrops
8,557
22,798(平均2.7)
7,239 (84.6%)
258 (3.0%)
Say Say
2,956
20,006(平均6.8)
1,374 (46.5%)
42 (1.4%)
Scrabble Score Scrabble Score
6,485
23,662(平均3.6)
5,484 (84.6%)
1,085 (16.7%)
Secret Handshake Secret Handshake
4,407
22,142(平均5.0)
3,400 (77.1%)
468 (10.6%)
Space Age Space Age
4,776
11,124(平均2.3)
3,696 (77.4%)
65 (1.4%)
Collatz Conjecture Collatz Conjecture
2,433
9,718(平均4.0)
2,008 (82.5%)
38 (1.6%)
Diamond Diamond
3,047
16,341(平均5.4)
2,018 (66.2%)
57 (1.9%)
Error Handling Error Handling
2,136
15,298(平均7.2)
1,250 (58.5%)
7 (0.3%)
ISBN Verifier ISBN Verifier
2,941
14,543(平均4.9)
2,319 (78.9%)
44 (1.5%)
Isogram Isogram
5,383
20,649(平均3.8)
4,367 (81.1%)
172 (3.2%)
Killer Sudoku Helper Killer Sudoku Helper
931
4,999(平均5.4)
513 (55.1%)
18 (1.9%)
Kindergarten Garden Kindergarten Garden
1,462
5,176(平均3.5)
1,088 (74.4%)
13 (0.9%)
Largest Series Product Largest Series Product
2,126
13,227(平均6.2)
1,682 (79.1%)
23 (1.1%)
Luhn Luhn
2,815
14,052(平均5.0)
2,198 (78.1%)
51 (1.8%)
Matrix Matrix
3,465
17,967(平均5.2)
2,606 (75.2%)
314 (9.1%)
Nth Prime Nth Prime
1,644
6,427(平均3.9)
1,285 (78.2%)
22 (1.3%)
Prism Prism
165
1,162(平均7.0)
77 (46.7%)
1 (0.6%)
Proverb Proverb
3,005
8,953(平均3.0)
2,441 (81.2%)
34 (1.1%)
Rate Limiter Rate Limiter
332
1,450(平均4.4)
181 (54.5%)
5 (1.5%)
Rotational Cipher Rotational Cipher
2,606
13,151(平均5.0)
2,186 (83.9%)
226 (8.7%)
Saddle Points Saddle Points
1,961
8,965(平均4.6)
1,342 (68.4%)
161 (8.2%)
Sieve Sieve
1,620
4,737(平均2.9)
1,285 (79.3%)
25 (1.5%)
Split-Second Stopwatch Split-Second Stopwatch
237
1,955(平均8.2)
156 (65.8%)
0 (0.0%)
Sum of Multiples Sum of Multiples
2,224
8,099(平均3.6)
1,639 (73.7%)
40 (1.8%)
Swift Scheduling Swift Scheduling
214
1,991(平均9.3)
147 (68.7%)
1 (0.5%)
Triangle Triangle
3,063
12,438(平均4.1)
2,601 (84.9%)
262 (8.6%)
Twelve Days Twelve Days
2,846
15,695(平均5.5)
2,142 (75.3%)
33 (1.2%)
Variable Length Quantity Variable Length Quantity
770
3,083(平均4.0)
404 (52.5%)
2 (0.3%)
Yacht Yacht
1,700
8,304(平均4.9)
1,130 (66.5%)
31 (1.8%)
Allergies Allergies
1,452
5,148(平均3.5)
1,095 (75.4%)
25 (1.7%)
Atbash Cipher Atbash Cipher
917
5,110(平均5.6)
729 (79.5%)
9 (1.0%)
Bob Bob
2,301
14,162(平均6.2)
1,862 (80.9%)
62 (2.7%)
Flatten Array Flatten Array
1,882
8,369(平均4.4)
1,400 (74.4%)
137 (7.3%)
Conway's Game of Life Conway's Game of Life
510
2,377(平均4.7)
322 (63.1%)
2 (0.4%)
Grep Grep
789
3,993(平均5.1)
435 (55.1%)
7 (0.9%)
Knapsack Knapsack
1,032
4,768(平均4.6)
611 (59.2%)
10 (1.0%)
Ledger Ledger
463
3,267(平均7.1)
255 (55.1%)
9 (1.9%)
Matching Brackets Matching Brackets
913
3,494(平均3.8)
655 (71.7%)
11 (1.2%)
Nucleotide Count Nucleotide Count
2,240
6,720(平均3.0)
1,988 (88.8%)
91 (4.1%)
Pascal's Triangle Pascal's Triangle
892
2,462(平均2.8)
636 (71.3%)
5 (0.6%)
Phone Number Phone Number
1,621
9,429(平均5.8)
1,232 (76.0%)
26 (1.6%)
Pig Latin Pig Latin
2,774
12,274(平均4.4)
1,553 (56.0%)
76 (2.7%)
Prime Factors Prime Factors
966
2,926(平均3.0)
738 (76.4%)
11 (1.1%)
Relative Distance Relative Distance
991
5,975(平均6.0)
428 (43.2%)
9 (0.9%)
Robot Name Robot Name
1,922
10,788(平均5.6)
1,564 (81.4%)
139 (7.2%)
Run-Length Encoding Run-Length Encoding
724
3,161(平均4.4)
516 (71.3%)
9 (1.2%)
Series Series
1,085
3,293(平均3.0)
887 (81.8%)
11 (1.0%)
Square Root Square Root
641
1,929(平均3.0)
506 (78.9%)
9 (1.4%)
Word Count Word Count
2,980
17,348(平均5.8)
2,265 (76.0%)
213 (7.1%)
State Of Tic Tac Toe State Of Tic Tac Toe
384
2,602(平均6.8)
230 (59.9%)
6 (1.6%)
Affine Cipher Affine Cipher
425
3,164(平均7.4)
278 (65.4%)
4 (0.9%)
All Your Base All Your Base
573
2,942(平均5.1)
390 (68.1%)
2 (0.3%)
Alphametics Alphametics
611
2,660(平均4.4)
251 (41.1%)
3 (0.5%)
Baffling Birthdays Baffling Birthdays
95
425(平均4.5)
57 (60.0%)
0 (0.0%)
Bank Account Bank Account
1,759
9,617(平均5.5)
1,205 (68.5%)
96 (5.5%)
Binary Search Binary Search
1,422
7,844(平均5.5)
1,071 (75.3%)
94 (6.6%)
Bottle Song Bottle Song
871
7,752(平均8.9)
549 (63.0%)
19 (2.2%)
Bowling Bowling
1,026
8,287(平均8.1)
442 (43.1%)
11 (1.1%)
Camicia Camicia
47
354(平均7.5)
27 (57.4%)
0 (0.0%)
ETL ETL
1,878
2,958(平均1.6)
1,690 (90.0%)
128 (6.8%)
Flower Field Flower Field
119
494(平均4.2)
81 (68.1%)
0 (0.0%)
Food Chain Food Chain
938
3,563(平均3.8)
629 (67.1%)
11 (1.2%)
Grade School Grade School
908
3,133(平均3.5)
650 (71.6%)
22 (2.4%)
House House
1,006
3,766(平均3.7)
720 (71.6%)
10 (1.0%)
Intergalactic Transmission Intergalactic Transmission
984
1,903(平均1.9)
108 (11.0%)
5 (0.5%)
Linked List Linked List
1,475
6,380(平均4.3)
1,040 (70.5%)
78 (5.3%)
Parallel Letter Frequency Parallel Letter Frequency
800
3,712(平均4.6)
494 (61.8%)
13 (1.6%)
Piecing It Together Piecing It Together
84
763(平均9.1)
44 (52.4%)
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
403
1,568(平均3.9)
243 (60.3%)
1 (0.2%)
REST API REST API
803
4,452(平均5.5)
203 (25.3%)
5 (0.6%)
Robot Simulator Robot Simulator
868
2,772(平均3.2)
548 (63.1%)
10 (1.2%)
Roman Numerals Roman Numerals
1,229
3,794(平均3.1)
896 (72.9%)
15 (1.2%)
Spiral Matrix Spiral Matrix
637
1,618(平均2.5)
400 (62.8%)
6 (0.9%)
Tournament Tournament
799
4,024(平均5.0)
406 (50.8%)
10 (1.3%)
Transpose Transpose
582
3,027(平均5.2)
319 (54.8%)
2 (0.3%)
Wordy Wordy
611
2,845(平均4.7)
359 (58.8%)
6 (1.0%)
Anagram Anagram
3,209
10,564(平均3.3)
2,308 (71.9%)
114 (3.6%)
Binary Search Tree Binary Search Tree
695
2,987(平均4.3)
390 (56.1%)
9 (1.3%)
Clock Clock
584
2,467(平均4.2)
388 (66.4%)
3 (0.5%)
Crypto Square Crypto Square
472
1,922(平均4.1)
318 (67.4%)
3 (0.6%)
Dominoes Dominoes
1,100
3,218(平均2.9)
293 (26.6%)
9 (0.8%)
Go Counting Go Counting
515
1,503(平均2.9)
191 (37.1%)
0 (0.0%)
Markdown Markdown
958
2,243(平均2.3)
397 (41.4%)
14 (1.5%)
Meetup Meetup
917
2,450(平均2.7)
710 (77.4%)
13 (1.4%)
Poker Poker
783
2,706(平均3.5)
238 (30.4%)
6 (0.8%)
SGF Parsing SGF Parsing
157
1,948(平均12.4)
88 (56.1%)
2 (1.3%)
Simple Linked List Simple Linked List
791
4,076(平均5.2)
472 (59.7%)
10 (1.3%)
Sublist Sublist
520
1,846(平均3.6)
332 (63.8%)
0 (0.0%)
Tree Building Tree Building
352
846(平均2.4)
161 (45.7%)
3 (0.9%)
Two Bucket Two Bucket
410
1,187(平均2.9)
181 (44.1%)
3 (0.7%)
Word Search Word Search
899
2,608(平均2.9)
286 (31.8%)
5 (0.6%)
Zebra Puzzle Zebra Puzzle
3,239
2,927(平均0.9)
532 (16.4%)
13 (0.4%)
Zipper Zipper
334
973(平均2.9)
148 (44.3%)
0 (0.0%)
Book Store Book Store
680
2,343(平均3.4)
238 (35.0%)
6 (0.9%)
Change Change
581
3,407(平均5.9)
243 (41.8%)
4 (0.7%)
Circular Buffer Circular Buffer
619
2,460(平均4.0)
378 (61.1%)
5 (0.8%)
Complex Numbers Complex Numbers
670
2,318(平均3.5)
418 (62.4%)
11 (1.6%)
Connect Connect
360
1,806(平均5.0)
188 (52.2%)
7 (1.9%)
Hangman Hangman
381
1,130(平均3.0)
102 (26.8%)
6 (1.6%)
List Ops List Ops
569
2,380(平均4.2)
305 (53.6%)
10 (1.8%)
Mazy Mice Mazy Mice
158
718(平均4.5)
72 (45.6%)
4 (2.5%)
OCR Numbers OCR Numbers
395
842(平均2.1)
211 (53.4%)
3 (0.8%)
Palindrome Products Palindrome Products
485
1,492(平均3.1)
258 (53.2%)
5 (1.0%)
POV POV
173
781(平均4.5)
83 (48.0%)
1 (0.6%)
Rational Numbers Rational Numbers
531
3,396(平均6.4)
285 (53.7%)
6 (1.1%)
React React
282
1,140(平均4.0)
91 (32.3%)
2 (0.7%)
Rectangles Rectangles
376
898(平均2.4)
190 (50.5%)
4 (1.1%)
Simple Cipher Simple Cipher
539
1,820(平均3.4)
349 (64.7%)
7 (1.3%)
Forth Forth
531
1,891(平均3.6)
217 (40.9%)
13 (2.4%)
Pythagorean Triplet Pythagorean Triplet
1,090
6,725(平均6.2)
474 (43.5%)
7 (0.6%)
Custom Set Custom Set
606
2,130(平均3.5)
273 (45.0%)
5 (0.8%)
Satellite Satellite
537
1,143(平均2.1)
182 (33.9%)
4 (0.7%)
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%)
4件の未実装のプラクティス演習
Resistor Color Tolerance Resistor Color Tolerance
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: 3f0677266bdae1fa5828cde474d4d65e57f4d967 (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
4,867,752
テスト実行の合格率
17.3% (841623)
テスト実行の失敗率
38.1% (1855840)
テスト実行のエラー率
44.6% (2170289)

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: 0dacac5bc7ce92d4a2612ffa8eb4c7eac24d3219 (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
957,905
正規化表現へのコメントの総数
112,199
フィードバックの提供頻度
11.7%

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: 1a09c2c7f5539c77344519ba8a7b6561ad51adde (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
673,170
分析コメントの総数
436,098
フィードバックの頻度
4.3%